单项选择题
窗体上有一个名称为Commandl的命令按钮,其单击事件过程如下:Private Sub Commandl_Click() Dim x As Integer,y As Integer Static z As Integer x=3:y=5:z=y Call f(x,y,z) Print x;y;z End SubPrivate Sub f(ByVal a As Integer,ByRef b As Integer,c As Integer) a=a+a:b=b+b:c=c+cEnd Sub运行程序,单击命令按钮时,3个标签中显示的内容分别是
A.3 5 5
B.3 5 10
C.3 10 5
D.3 10 10