单项选择题

假定有如下的Sub过程:
Sub Subl(x As Single,y As single)
  t=x
  x=t/Y
  y=t Mod y
End Sub
在窗体上画一个命令按钮,然后编写如下事件过程:
Private Sub Command1_Click()
Dim a As Single
Dim b As Single
  a=5
  b=4
  Subl a,b
  Print a;b
End Sub
程序运行后,单击命令按钮,输出结果为