单项选择题

有如下程序: Private Sub Form_Click()  Dim Check,Counter  Check=True  Counter=0  Do   Do While Counter<20    Counter=Counter+1    If Counter=10 Then     Check=False    Exit Do   End If Loop Loop Until Check=False Print Counter,Check End Sub 程序运行后,单击窗体,输出结果为( )。

A.15 0
B.20 -1
C.10 True
D.10 False
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