YouworkasanapplicationdeveloperatCertkiller.com.Certkiller.comwantsyoutodevelopanapplicationthathandlespassesforCertkiller.com’sparkinglot.Theapplicationhastostoreandretrievevehicleinformationusingavehicleidentificationnumber（VIN）.Youneedtousethecorrectco
题目
YouworkasanapplicationdeveloperatCertkiller.com.Certkiller.comwantsyoutodevelopanapplicationthathandlespassesforCertkiller.com’sparkinglot.Theapplicationhastostoreandretrievevehicleinformationusingavehicleidentificationnumber（VIN）.Youneedtousethecorrectcodetoensuretype-safety.Whatshouldyoudo？（）
A.A
B.B
C.C
D.D