请阅读短文，完成此题。 We'vegotitallwrong,saysCarlosSlim,theMexicantelecomstycoonandworld'ssecond-richestman:weshouldbeworkingonlythreedaysaweek.AttendingabusinessconferenceinParaguay,Mr.Slimsaiditwastimefora"radicaloverhaul"ofpeople'sworkinglives.Insteadofbeingabletoretireat50or60,hesays,weshouldworkuntilweareolder--buttakemoretimeoffaswedoso. "Peoplearegoingtohavetoworkformoreyears,untiltheyare70or75,andjustworkthreedaysaweek--perhaps11hoursaday,"hetoldtheconference,accordingtoParaguay.comnewsagency."Withthreeworkdaysaweek,wewouldhavemoretimetorelaxforqualityoflife.Havingfourdays(off)wouldbeveryimportanttogeneratenewentertainmentactivitiesandotherwaysofbeingoccupied."The74-year-oldself-mademagnatebelievesthatsuchamovewouldgenerateahealthierandmoreproductivelabourforce,whiletacklingfinancialchallengeslinkedtolongevity.Heisputtinghismoneywherehismouthis.InhisTehnexfixed-linephonecompanyinMexico,whereworkersonacollectivelabourcontractwhojoinedthecompanyintheirlateteensareeligibletoretirebeforetheyare50,hehasinstitutedavoluntaryschemeallowingsuchworkerstokeepworking,onfullpay,buttheyonlyneedtoworkfourdaysaweek. Mr.SlimstunnedtheMexicanbusinessworldthismonthwithplanstobreakuphisAm6ricaM6vilempire,sellingaboutafifthofitsassets,inordertoavoidregulatorysanctions.Hiscompaniesdominate80percentofthefixed-lineand70percentofthemobilemarketsinMexico--aboveanew50percentthreshold.Themagnateisakeenstrategistandphilanthropist,whohasoftensaidwhathelikestodobestistothink.Hehascultivatedinterestsoutsidethecorporateworld:hispassionforRodinsculptureandartcollectingisevidentintheSoumayamuseuminMexicoCitydedicatedtohislatewife. Anotherofhisdeep-heldbeliefsisthateducationshouldberethought.HetoldtheconferenceinParaguaythatitshould"notbeboring,butshouldbefun"andshouldteachpeople"nottomemorizebuttoreason;nottodomesticatebuttotrain".Healsocalledformorevocationaltraining. Mr.Slim,whoisattheageof74already,meanwhile,appearstohavenoplanstoretire. "Lookatwhoherespects:the(Mexican)bankerManuelEspinosaYglesiaswassomethingofamentor,andhewasstillworkinginhislate80s,"saidAndrewPaxman,aBritishhistorianwhoiswritingabookaboutMr.Slim. WhichofthefollowingisnottheadvantageofworkingthreedaysaweekinMr.Slim'sopinion? 查看材料
A.The move can generate a healthier labour force.
B.The labour will be more productive.
C.People will remain happy if so.
D.It will tackle financial challenges linked to longevity.
正确答案是C