下列程序执行的结果为( )。 A = "HELLOCANIHELPYOU" B = "WANGCHANGLI" C = Left(A,5) +"!" D = Right(A, 7) E = Mid(A, 6, 4) F = Mid(B, Len(B) -6) + "!" G = E+ " " + D + " ! " H = C +" " + F Print H + " " + G

A．HELLO! CHANGLI! CANIHELPYOU!

B．HELLO! WANG! CANIHELPYOU

C．HELLO! CANIHELPYOUI

D．HELLO! CHANG! CANIHELPYOU!