要求当鼠标在图片框P1中移动时，立即在图片框中显示鼠标的位置坐标。下列能正确实现上述功能的事件过程是

A．Private Sub P1_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
Print X,Y
End Sub
B．Private Sub P1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
Picture.Print X,Y
End Sub
C．Private Sub P1_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
P1.Print X,Y
End Sub
D．Private Sub Form_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
P1.Print X,Y
End Sub