为自己加油

设有一循环队列SQ，现将数据x进行入队操作，语句为

A.SQ.front=(SQ.front+1)% maxsize;
B.SQ.rear=(SQ.rear+1)% maxsize;
C.SQ.front=(SQ.front+1)% maxsize; SQ.data[SQ.front]=x;
D.SQ.rear=(SQ.rear+1)% maxsize; SQ.data[SQ.rear]=x;