5、有两个整型变量dog和cat,若要从磁盘文件把数据读到其中,正确的形式是______

A. fscanf(dog ,2,1,fp);

B. fscanf(fp,"%d%d",&dog ,&cat);

C. fscanf(dog ,cat,2,1,fp);

D. fscanf(fp,"%d",&dog ,&cat);