已知p指向双向链表中的某个结点，那么执行在p结点后插入s结点的语句序列是()
A.s->next-p->next；p->next->prior-s；p->next=s；s->prior=p B.p->next->prior=s；s->next=p->next；p->next=s；s->prior=p C.p->next->prior-s；s->next=p->next；s->prior=p；p->next=s D.s->next-p->next；p->next->prior=s；s->prior=p；p->next=s正确答案A
