单项选择题
下列程序段执行的结果为( )。 A="HELLOCANIHELPYOU" B="WANGCHANGLI" C=Left(A,5)+"!" D=Right(A,7) E=Mid(A，6，4) F=Mid(B,Len(B) )-6.5)+"!" G=E+" "+D+"!" H=C+" "+F Print H+" "+G
A．HELLO!CHANG!CANIHELPYOU!
B．HELLO!WANG!CANIHELPYOU
C．HELLO!CANIHELPYOU!
D．HELLO!CHANG!CANIHELPYOU!