英语和逻辑高手进!Ilivealone,buttodayIhaveinvitedfriendstodinner.Iwanteverythingtobereadytoserveat1pm.IhavemadeachecklistofeverythingIneedtodobeforethen,togetherwithtimings,asfollows:Preparemeat10minsCookmea

　　英语和逻辑高手进!

　　Ilivealone,buttodayIhaveinvitedfriendstodinner.Iwanteverythingtobereadyto

　　serveat1pm.IhavemadeachecklistofeverythingIneedtodobeforethen,together

　　withtimings,asfollows:

　　Preparemeat10mins

　　Cookmeat(hotoven)2hours

　　Carvemeat5mins

　　Preparevegetables(potatoes,carrots,broccoli)20mins

　　Boilwaterforvegetables5mins

　　Boilvegetables15mins

　　Preparegravy(usingjuicefrommeatafterithasbeencooked)5mins

　　Preparebreaddough20mins

　　Bakebread(mediumheatoven)1hour

　　Settable15mins

　　Mygascookerconsistsofoneovenandafour-ringhob.Iwanttoservethedinneras

　　soonaspossibleafterthemeathasfinishedcooking.

　　WhatisthelatestpossibletimeIcanbeginmypreparations?

　　A7.55am

　　B9.15am

　　C9.20am

　　D9.30am

　　E9.50am