单选题：根据下列短文，回答题。　　To understand the marketing concept，it is only

根据下列短文，回答题。
　　To understand the marketing concept，it is only necessary to understand the difference be—tween marketing and selling．Not too many years ago，most industries concentrated primarily onthe efficient production of goods，and then relied on“Persuasive salesmanship”to move asmuch of these goods as possible．Such production and selling focuses on the needs of the sellerto produce goods and then convert them into money．
　　Marketing，On the other hand，focuses on the wants of consumers．It begins with first analy zing the preferences and demands of consumers and then producing goods that will satisfythem．This eye on the consumer approach is known as the marketing concept，which sireplymeans that instead of trying to sell whatever is easiest to produce or：buy for resale，the makersand dealers first try to.find out what the consumer wants to buy and then go aleIout making it ac-cording to consumer demand．
　　This concept does not imply that consumer satisfaction is given priority over profit in a como pany．There are always two sides to every business activity-the finn and the customer-and，each must be satisfied before bade OCCURS．Successful merchants and producers，however，recog-nize that the surest route to profit is through understanding customers．This concept has been rec-ognized in such slogalls as“Have It Your Way．”And“You're the Boss．”A good example of theinlpoltaJlce of satisfying the consumer presented it self in mid一1985，when Coca Cola changed theflavor of its drink．The non-acceptahoe of the new flavor by a significant potion of the pubhebrought about a quick restoration of the Classic Coke，which Was then marketed alongside the newKing Customer ruled!
A good knowledge of the difference between marketing and selling leads to________. A．the efficient production of goods
B．a perfect command of salesmanship
C．a basic command of the marketing concept
D．the conversion of goods into money