A．Static arrl(3) arrl(1)=100 arrl(2)="Hello" arrl(3)=123.45 B．Dim arr2()As Integer Dim size As Integer Private Sub Command2 Click() size=InputBox("输入：") ReDimarr2(siz End Sub C．Option Basel Private Sub Command3 Click() Dim arr3(3)As Integer End Sub D．Dim n As Integer Private Sub Command4 Click() Dim arr4( As Integer End Sub