【单选题】

有以下程序：#include＜stdio.h＞main(){ FILE、*fp;int a[10]={1,2,3,0,0},i;fp=fopen("d2.dat","wb");fwrite(a,sizeof(int),5,fp);fwrite(a,sizeof(int),5,fp);fclose(fp);fp=fopen("d2.dat","rb");fread(a,sizeof(int),10,fp);fclose(fp);for(i=0;i＜10;i++)printf("%d,",a[i]);}程序的运行结果是()。

A、1,2,3,0,0,0,0,0,0,0,
B．1,2,3,1,2,3,0,0,0,0,
C．123,0,0,0,0,123,0,0,0,0,
D．1,2,3,0,0,1,2,3,0,0,