【单选题】

阅读程序：

Option Base 1
Private Sub Form_Click( )
Dim arr
Dim Sum%
Sum = 0
arr = Array(1, 3, 5, 7, 9)
For t = 1 To 5
Sum = Sum + arr(t)
Next t
Print Sum
End Sub
程序运行后，单击窗体，输入结果为()
A.5
B.9
C.25
D.15