运行下列程序:<br>Private Sub form_Click()<br>Dim sl As String, s2 As String<br>s1 = "1234"<br>m = 0<br>For i = 3 To 1 Step -1<br>m = m + 1<br>s2 = fun1(s1, m)<br>Debug.Print s2;<br>Next i<br>End Sub<br>Private Function fun1(x, y) As String<br>fun1 = Right(x, y)<br>End Function<br>单击窗体后,则在立即窗口内显示结果是()。
A. 1234
B. 4321
C. 434234
D. 1111