单项选择题

有以下程序
#include ＜stdio.h＞
void fun(char *t, char *s)
while(*t!=0) t++;
while( (*t++ = *s++ )!=0 );
main()
char ss[10]="acc",aa[10]="bbxxyy";
fun(ss, aa); printff"%s,%s\n", ss,aa);
程序的运行结果是
A) accxyy, bbxxyy B) acc, bbxxyy
C) accxxyy, bbxxyy D) accbbxxyy, bbxxyy