单项选择题

窗体上有一个命令按钮,命令按钮的单击事件过程如下。运行程序后,单击命令按钮,输出结果是 Private Sub Command1_Click( ) Dim a a = Array(1,2,3,4,5) For k = 1 To4 s=s+a(k) Next Print S End Sub

A.10
B.14
C.15
D.120