在双向循环链表中，设p指向待删结点，删除* p的正确语句为
A.p->prior->next=p->next;p->next->prior=p->prior;free(p); B.p->next= p->prior->next;p->prior= p->next->prior;free(p); C.p->prior->next = p->next;p->next->prior = p->prior； D.p->next= p->prior->next;p->prior= p->next->prior;正确答案A
