单项选择题

有如下函数过程：
Function Fun (By Val x As Ingeger, ByVal y As Integer)As Integer
Do While…y＜＞0
reminder=x Mod y
x=y
y=reminder
Loop
Fun=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 Command1_Click()
Dim a As Integer
Dim b As Integer
a=100:b=25
x=Fun(a，b)
Print x
End Sub