A.Static arr1(3) Arr1l(1)=100 Arr1(2)=“Hello” Arr1(3)=123.45 B.Dim art2( )As Integer Dim size As Integer Private Sub Command2_Click( ) size=Input Box(“输入:”) ReDinl.arr2(size) …… End Sub C.Option Base 1 Private Sub Command3_Click( ) Dim arr3(3) As Integer …… End Sub D.Dim n As Integer Private Sub Command4_Click( ) Dim arr(n) As Integer …… End Sub