向一个栈顶指针为 hs 的链式栈中插入一个指针 s 指向的结点时，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;

{{ select(1) }}

• A
• B
• C
• D