若有以下程序 typedefstructstu{charname[10],gender;intscore;)STU; voidf(STUa,STUb){ b=a: printf(”%s,%c,%d,”,b.name,b.gender,b.score);} main(){ STUa={Zhao,m,290},b={Qian,f,350}; f(a,b); printf(”%s,%c,%dha”,b.name,b.gender,b.score);} 则程序的输出结果是
A. Zhao,m,290,Zhao,m,290
B. Zhao,m,290,Qian,f,350
C. Qian,f,350,Qian,f,350
D. Zhao,m,290,Zhao,f,350