单选题：For a non-empty doubly linked circular list, with `h` and `t` po

For a non-empty doubly linked circular list, with `h` and `t` pointing to its head and tail nodes, respectively, the TRUE statement is:

@[A](2)

A. `t->next == h`
B. `h->pre == NULL`
C. `t->next == h->next`
D. `h->next == t`



A.`t->next == h`
B.`h->pre == NULL`
C.`t->next == h->next`
D.`h->next == t`


答案：A