单选题 窗体中有命令按钮Command1，事件过程如下：
Public Function f(x As Integer)As Integer
Dim y As Integer
x=20
y=2
f=x*y
End Function
Private Sub Command 1_Click()
Dim y As Integer
Static x As Integer
x=10
y=5
y=f(x)
Debug.Print x;y
End Sub
运行程序，单击命令按钮，则立即窗口中显示的内容是______。

• A.10 5
• B.10 40
• C.20 5
• D.20 40