单项选择题

以下程序运行后的输出结果是 #include<stdio.h> void fun(int *a, int *b) { int *c;  c=a; a=b; b=c; } main() { int x=3, y-5, *p=&x, *q=&y;  fun(p, q); printf("%d, %d,", *p, *q);  fun(&x, &y); printf("%d, %d\n", *p, *q); }

A.3,5,5,3
B.3,5,3,5
C.5,3,3,5
D.5,3,5,3