单项选择题

阅读下面的程序:
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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