单项选择题

有如下函数过程: Function gys(ByVal x As Integer,ByVal y As Integer) As Integer Do While y<>0 reminder = x Mod y x=y y=reminder Loop gys=x End Function以下是调用该函数的事件过程,该程序的运行结果是______。 Private Sub Command7_Click() Dim s As Integer Dim b As Integer a=100 b=25 x=gys(a,b) Print x End Sub

A.0
B.25
C.50
D.100