有以下程序
#include＜stdio.h＞
typedef structint b,p;A;
void f(A c)/*注意：c是结构变量名*/
int j;
c.b+=1;c.p+=2;

main()
int i;
A a=1,2;
f(a);
printf("%d,%d\n",a.b,a.p);

程序运行后的输出结果是______。

A．typedef struct int n;char c;REC;
REC t1,t2;
B．struct REC;
int n;char c;);
REC t1,t2;
C．typedef struct REC;
int n=0;char c=’A’;t1,t2;
D．struct
int n;char c;REC;
REC t1,t2;

A．struct ordint x;int y;int z;struct ord a;
B．struct ordint x;int y;int z;;struct ord a;
C．struct ord int x;int y;int z;a;
D．streetint x;int y;int z;)a;