有以下程序：#include struct STU{ int num; float TotalScore;};void f(struct STU p){ struct STU s[2]={{20044,550},{20045,537}}; p.num=s[1].num; p.TotalScore=s[1].TotalScore;}int main(){ struct STU s[2]= {{20041,703},{20042,580}}; f(s[0]); printf("%d %3.0f\n",s[0].num,s[0].TotalScore); return 0;}程序运行后的输出结果是( )。
选项：

A:20045 537 ;
B:20044 550;
C:20042 580 ;
D:20041 703