Whenreportcardsweredistributedinacertainhomeroomclass,itwasfoundthat13studentsreceivedatleastonegradeofA,15studentsreceivedatleastonegradeofB,and6studentsreceivedbothAsandBs.Ifone-thirdofthestudentsinthehomeroomclassreceivednoAsandnoBs,howmanystudentsareinthehomeroomclass? A: 27 B: 30 C: 33 D: 36 E: 39