_________for the free tickets,I would not have gone to the films so often.     [ ]

A.  If it is not                                      

B.  Were it not      

C.  Had it not been                                    

D. If they were not

窗体中有一个名为Command1的命令按钮和一个名为Text1的文本框，事件代码如下：

Private Sub Command1_Click ()

Dim a(10) As Integer , b(10) As Integer

n=3

For i=1 T0 5

a(i)= i

b(n) = 2*n+i

Next i

Me!Text1 = a(n) + b(n)

End Sub

打开窗体，单击命令按钮，文本框Text1中显示的内容是（）。