有以下程序#includetypedef struct stu{charname[10];chargender;intscore;}STU;voidf(STUa,STU*b,STUc){*b=c=a;printf("%s,%c,%d,",b->name,b->gender,b->score);printf("%s,%c,%d,",c.name,c.gender,c.score);}main(){STUa={"Zhao",'m',290},b={"Qian",'f',350},c={"Sun",'m',370};f(a,&b,c);printf("%s,%c,%d,",b.name,b.gender,b.score);printf("%s,%c,%d\n",c.name,c.gender,c.score);}程序运行后的输出结果是
A. Zhao,m,290,Zhao,m,290,Zhao,m,290,Sun,m,370
B. Zhao,m,290,Zhao,m,290,Zhao,m,290,Zhao,m,290
C. Zhao,m,290,Zhao,m,290,Qian,f,350,Sun,m,370
D. Zhao,m,290,Zhao,m,290,Qian,f,350,Zhao,m,290