有以下程序
#include <stdio.h>
Main()
{FILE *fp; int i;
Char ch[]="abcd",t;
Fp=fopen ("abc.dat","wb+");
For (i=0;i<4;i++) fwrite(&ch[i],1,1,fp);
Fseek (fp,-2L,SEEK_END);
Fread (&t,1,1,fp);
Fclose (fp);
Printf ("%c\n",t);
}
程序执行后的输出结果是______。
A.d B.c C.b D.a正确答案B
