题目内容：
根据以下内容，回答题。 To: All Griffin Corporation Employees
From: Sally Kleinman, Director, Employee Relations
Re: Employee Fitness Center
Sent: Thursday, November 1, 9:46 A.M.
Dear Colleagues:
As you know, Griffin Corporation recognizes the importance of having an excellent exercise facility on the premises. Over the past three years, we have worked hard to improve the employee fitness center: we have purchased new exercise equipment, renovated the locker rooms, and begun offering "Welcome Aboard! ", a safety training course.
Two months ago, you responded enthusiastically to a survey about this fitness facility. Based on our recommendations, changes are planning for the fitness center. They will take effort on December 1. First of all, as requested, the fitness center will stay open three extra hours Monday through Thursday. Also, a new series of classes-most of them suggested by you-will begin. Finally,those of you who have been using the center will be pleased to hear that popular personal trainer Joseph Santiago will be promoted to manager of the fitness center.
We encourage more employees to take advantage of all the fitness center has to offer.
Membership will continue to be subsidized and will remain at $15 per month. In addition, and for a limited time only, we are now offering a special rate for new members, members who sign up before December 1 will only be charged $10 per month for the next six months. Please contact Joseph Santiago to sign up at this new reduced rate.
Best Regards,
Sally Kleinman
GRIFFIN EMPLOYEE FITNESS CENTER:NEW SCHEDULE
(as of December 1)
Hours of Operation Group Classes
Monday6:00 A.M.-9:00 P.M.MondayWeight lifting12:00-1:00 P.M.
Tuesday6:00 A.M.-9:00 P.M. TuesdayAerobic workout 6:00-7:00 P.M.
Wednesday 6:00 A.M.-9:00 P.M.Wednesday Kickboxing 12:00-1:00 P.M.
Thursday 6:00 A.M.-9:00 P.M. ThursdayStep aerobics6:00-7:00 P.M.
Friday 6:00 A.M.-9:00 P.M.Friday Yoga7:00-$:30 A.M.
Saturday 6:00 A.M.-9:00 P.M.SaturdayCross training9:00-1:30 A.M.
SundayCLOSED ALL DAY Sunday CLOSED ALL DAY
Reminders
1. Please do not use equipment for more than 30 minutes if other members are waiting to use it.
2. Members may bring one guest per visit. Guests under 18 must be accompanied by a member at all times.
3. Registration is not required for classes, but class size is limited to 15 participants. Please arrive early to secure a place. Goals and bags should be left in the locker room so that all class participants have plenty of space.
4. New members are required to complete a"Welcome Aboard" class before using any
equipment.
5. Members must carry their membership card at all times while in the center.
What is the purpose of the e-mail? A．To complain about problems at a fitness center
B．To request suggestions for new fitness center classes
C．To notify employees about a new fitness center
D．To inform employees of changes at a fitness center
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