双向链表中每个结点有两个指针域 prev 和 next，分别指向该结点的前驱及后继结点。设 p 指向链表中的一个结点，它的前驱结点和后继结点均非空。要删除结点 p，则下述语句中错误的是（ ）。

{{ select(1) }}

• p->next->prev = p->next; p->prev->next = p->prev; delete p;
• p->prev->next = p->next; p->next->prev = p->prev; delete p;
• p->next->prev = p->prev; p->next->prev->next = p->next; delete p;
• p->prev->next = p->next; p->prev->next->prev = p->prev; delete p;