有以下程序
int a=2;
int f(int n)
static int a=3;
int t=0;
if(n%2) static int a=4; t+=a++;
else static int a=5; t+=a++;
return t+a++;main()
int s=a, i;
for( i=0; i＜3; i++) s+=f(i);
　printf("%d\n", s);程序运行后的输出结果是______。
(A) 26
(B) 28
(C) 29
(D) 24

A) typedef struct aa
int n;
float m;AA;AA td;
B) struct aa
int n;
float m;
td;
struct aa td;
C) struct
int n;
floatm;
aa;
struct aa td;
D) struct
int n;
float m;
td;