设单链表中结点的结构为(data, link)。已知指针q所指结点是指针p所指结点的直接前驱,若在*q与*p之间插入结点*s,则应执行下列哪一个操作()
(A)s->link = p->link; p->link = s;
(B)p->link = s; s->link = q;
(C)p->link = s->link; s->link = p;
(D)q->link = s; s->link = p;
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(A)s->link = p->link; p->link = s;
(B)p->link = s; s->link = q;
(C)p->link = s->link; s->link = p;
(D)q->link = s; s->link = p;