单项选择题

在窗体上画一个名称为Command1的命令按钮,然后编写如下事件过程:
Option Base 1
Private Sub Command1_Click()
Dim a(5,5) As Integer
For i=1 To 5
For j=1 To 5
a(i,j)=(i+j)*5\10
Next j
Next i
s=0
For i=1 To 5
s=s+a(i,i)
Next i
Print s
End Sub
程序运行后,单击命令按钮,输出结果是

A.15
B.13
C.11
D.9