向一个栈顶为 hs 的链式栈中插入一个指针为 s 的结点时，应执行（ ）。
- A.
hs->next = s; - B.
s->next = hs; hs = s; - C.
s->next = hs->next; hs->next = s; - D.
s->next = hs; hs = hs->next;
g6-04802.in输出g6-04802.out向一个栈顶为 hs 的链式栈中插入一个指针为 s 的结点时，应执行（ ）。
hs->next = s;s->next = hs; hs = s;s->next = hs->next; hs->next = s;s->next = hs; hs = hs->next;