单项选择题

下列程序的执行结果为
  Private Sub Commandl_Click( )
    Dim X As Integer,y As Integer
    x=12:y=20
    Call Value(x,y)
    Print X;y
  End Sub
  Private Sub Value(ByVal m As Integer,ByVal n As Integer)
    m=m * 2:n=n-5
    Print m;n
  End Sub

A.20  12
 20  15
B.12  20
 12  25
C.24  15
 12  20
D.24  12
 12  15