下列程序的运行结果是( )。#include＜iostream.h＞void fun(int *a, int *b) 　{int *k; k=a; a=b; b=k;}void main(){int a=2OO4,b=9,*x=&a,*y=&b;fun(x, y);cout＜＜a＜＜" "＜＜b＜＜end1;}

A．20049

B．92004

C．00

D．编译时出错