单项选择题

有以下程序:
#include <stdio.h>
#include<string.h>
struct A
int a;char b[10]; double c;;
struct A f(struct A t);
main()
struct A a=1001,"ZhangDa",1098.0;
a=f(a); printf("%d,%s,%6.1f\n",a.a,a.b,a.c);

struct A f(struct A t)
(t.a=1002; strcpy(t.b,"ChangRong");t.c=1202.0; return t;)
程序运行后输出的结果是( )。

A.1001,ZhangDa,1098.0
B.1002,ZhangDa,1202.0
C.1001,ChangRong,1098.0
D.1002,ChangRong,1202.0