—Does Bob have vegetables for dinner?

—______. But his sister has some carrots.

A．Yes, he has

B．No, he hasn’t

C．Yes, he does

D．No, he doesn’t

以下程序运行后的输出结果是【 】。 int f(int a[],int n) {if(n＞=1 return f(a,n-1)+a[n-1)； else return 0； } main() {int aa[5]=(1,2,3,4,5),s； s=f(aa,5)； printf("%d\n",s)； }