有以下程序
#include
main()
FILE *fp; int i,a[6]=1,2,3,4,5,6;
fp=fopen("d2.dat","w");
fprintf(fp,"%d%d%d\n",a[0],a[1],a[2]);
fprintf(fp, "%d%d%d\n",a[3],a[4],a[5]);
fclose(fp);
fp=fopen("d2.dat","r");
fscanf(fp," "%d%d\n",＆k,＆n);
printf("%d%d\n",k,n);
fclose(fp);程序运行后的输出结果是______。

A．1 2

B．1 4

C．123 4

D．123 456