【单选题】
·you will hEAr A DisCussion BEtwEEn A rADio intErviEwEr AnD thE ownErs oF two CompAniEs whiCh sEll sAnDwiChEs.
·For EACh quEstion 23-30, mArk onE lEttErA,B、orC、For thE CorrECt AnswEr.
·AFtEr you hAvE listEnED onCE, rEplAy thE rECorDing.
whEn jACk First AgrEED to hElp gErAlDinE, hE wAsA.
B.
C.