下面程序的输出结果是( )。Private Sub Co mmand1_Click() ch$="ABCDEF" proc ch Prin
下面程序的输出结果是( )。Private Sub Co mmand1_Click() ch$="ABCDEF" proc ch Print chEnd SubPrivate Sub proc(ch As Stri ng)S="" For k =Len(ch)To 1Step -1 s =s &Mid(ch ,k ,1) Next k ch =sEnd SubA.ABCDEFB.FEDCBAC.