有以下程序 struct STU { char num[10]; float score[3]; }; main() { struct STU s[3]={{"20021",90,95,85}, {"20022",95,80,75}, {"20023",100,95,90}},*p=s; int i; float sum=0; for(i-0;i<3,i++) sum=sum+p->score[i]; printf("%6.2f\n",sum}; } 程序运行后的输出结果是
A.260.00
B.270.00
C.280.00
D.285.00