题目：在循环双链表的p所指结点之后插入s所指结点的操作是( )。
A. p->next=s; s->prior=p; p->next->prior=s; s->next=p->next;
B. p->next=s; p->next->prior=s; s->prior=p; s->next=p->next;
C. s->prior=p; s->next=p->next; p->next=s; p->next->prior=s;
D. s->prior=p; s->next=p->next; p->next->prior=s; p->next =s;
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