题目内容：
根据以下材料，回答题Itwasthesummerof1965.DeLuca,then17,visitedPeterBuck,afamilyfriend.BuckaskedDeLucaabouthisplansforthefuture."I'mgoingtocollege,butIneedawaytopayforit,"DeLu-carecallssaying.Bucksaid,"Youshouldopenasandwichshop."
Thatafteruoon,theyagreedtobepartners.Andtheysetagoal:toopen32storesintenyears.
Afterdoingsomeresearch,Buckwroteacheckfor$1,000.DeLucarentedastorefront(店面)inConnecticut,andwhentheycouldn'tcovertheirstart-upcosts,Buckkickedinanother$1,000.
Butbusinessdidn'tgosmoothlyastheyexpected.DeLucasays,"Aftersixmonths,weweredo-ingpoorly,butwedidn'tknowhowbadly,becausewedidn'thaveanyfinancialcontrols."AllheandBuckknewwasthattheirsaleswerelowerthantheircosts.
DeLucawasmanagingthestoreandgoingtotheUniversityofBridgeportatthesametime.BuckwasworkingathisdayjobasanuclearphysicistinNewYork.They'dmeetMondayeveningsand
brainstormideasforkeepingthebusinessrunning."Weconvincedourselvestoopenasecondstore.
Wefiguredwecouldtellthepublic,'Wearesosuccessful,weareopeningasecondstore.'"Andtheydid--inthespringof1966.Still,itwasalotoflearningbytrialanderror.
Butthepartners'learn-as-you-goapproachturuedouttobetheirgreateststrength.EveryFriday,DeLucawoulddrivearoundandhand-deliverthecheckstopaytheirsuppliers."Itprobablytookmetwoandahalfhoursanditwasn'tnecessary,butasaresult,thesuppliersgottoknowmeverywell,andthepersonalrelationships
establishedreallyhelpedout,"DeLueasays.
Andhavingagoalwasalsoimportant."Therearesomanyproblemsthatcangetyoudown.Youjusthavetokeepworkingtowardyourgoal,"DeLucaadds.
DeLucaendedupfoundingSubwaySandwich,themultimillion-dollarrestaurantchain.
DeLueaopenedthefirstsandwichshopinorderto__________. A．supporthisfamily
B．payforhiscollegeeducation
C．helphispartnerexpandbusiness
D．dosomeresearch
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