题目内容：
s在窗体上先后画2个图片框，名称分别为Picture1和banana，banana中添加了图片(见图1)，且将banana．DragMode属性设置为1。要求程序运行时，可以用鼠标把banana拖拽到Picture1中(见图2)。
能实现此功能的事件过程是（ ）
A．Private Sub Form_DragDrop(Source As Control，X As Single，Y As Single)
banana．Move Picture l.Left+X．Picture l．Top+Y
End Sub
B．Private Sub banana_DragDrop(Source As Control，X As Single，Y As Single)
Source．Move Picture 1．Left+X．Picture l．Top+Y
End Sub
C．Private Sub Picture1_DragDrop(Source As Control，X As Single，Y As Single)
Source．Move Picture1.Left+X．Picture1．Top+Y
End Sub
D．Private Sub Picture 1_LDragDrop(Source As Control，X As Single，Y As Single)
banana．Move banana.Left+X，banana．Top+Y)
End Sub
参考答案：
答案解析：