在循环双链表的 *p 结点之后插入 *s 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;