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：
Private Sub Command1_Click( )
　　Dim a As Integer, b As Integer, c As Integer
　　a = 1: b = 2: c = 3
　　Print fun2(c, b, a)
End Sub
Private Function fun1(x As Integer, y As Integer, z As Integer)
　　fun1 = 2 * x + y + 3 * z
End Function
Private Function fun2(x As Integer, y As Integer, z As Integer)
　　fun2 = fun1(z, x, y)+ x
End Function
程序运行后，单击命令按钮，则窗体上显示的内容是________。

点击查看答案