Questions49-51refertothefollowingletter. ToppoTravel.Inc. Mr.NoyceAdams 424LenoxSt Orange,MA01388 DearMr.Adams, Attheendofthisyear,Toppotravelwillcelebrateitstwentiethyearasasuccessfuloperatorintheleisureindustry.Withmodernhotels,excitingitineraries,andbeautifullocations,ourall-inclusive,organizedtourshaveremainedthemostloyalcustomersinthecelebrationofoursuccess. Ourrecordsindicatethatsinceyoubecameacustomerfiveyearsago,youhavebookedsixtripswithus.Wewouldliketoinviteyoutoaneveningofexoticfareandtropicalsounds,whichwillbeheldonDecember1intheGrandBallroomofthePanoramaHotel. Thebenefitwillconsistofdelicatesfromthe16countriesthatarefeaturedinourcatalogforthenewseason.BansfromCuba,Mali,andSloveniawilllendanexuberantatmospheretotheevent. Sincerely. JimBull DirectorCustomerRelations ToppoTravel.Inc. TowhateventhasMr.Adamsinvited?
A.hotel’s grand opening B.A retirement dinner C.An anniversary celebration D.An awards ceremony正确答案C