单选题
有如下程序; Private SubForm_Click() Dim check As Boolean,n As Integer check=False n=0 Do Do While n<10 n=n+1 If n=5 Then check=True Exit Do End if Print n; Loop Loop Until check = True End Sub 程序运行后,输出的结果是 ______ 。 A) 1 2 3 B) 1 2 3 4 C) 1 2 3 4 5 D) 1 2 3 4 5 6