在双向链表存储结构中，删除p所指的结点时需要修改指针______ 

A.p->next->prior=p->prior; p->prior->next=p->next

B.p->next=p->next->next; p->next->prior=p

C.p->prior->next=p; p->prior=p->prior->prior

D.p->prior=p->next->next; p->next=p->prior->prior