在窗体上画一个名称为Text1的文本框，并编写如下程序：
Private Sub Form Load()
Show
Text1.Text=""
Text1.SetFocus
End Sub
Private Sub Form_MouseUp(Button As Integer,Shift As Integer,x As Single,Y As Single)
Print"程序设计"
End Sub
Private Sub Text1_KeyDown(KeyCode As Integer,Shift As Integer)
Print"Visual Basic"；
End Sub
程序运行后，如果按A键，然后单击窗体，则在窗体上显示的内容_________。

A．1+1/2+2/3+3/4+4/5
B．1+1/2+2/3+3/4
C．1/2+2/3+3/4+4/5
D．1+1/2+1/3+1/4+1/5

A．Private Sub Command1_Click()
Label3.Caption=Str(Val(Label1.Caption)*Val(Label2.Caption))
End Sub
B．Private Sub Command1_Click()
Label3.Caption=HScroll1.Value*HScroll2.Value
End Sub
C．Private Sub Command1_Click()
Label3.Caption=HScroll1*HScroll2
End Sub
D．Private Sub Command1_Click()
Label3.Caption=HScroll1.Text*HScroll2.Text
End Sub