下列叙述中正确的是

A．线性链表是线性表的链式存储结构

B．栈与队列是非线性结构

C．双向链表是非线性结构

D．只有根结点的二叉树是线性结构

— Will Liu Ying come to school today?

— I don't know. But I also want to know            . [ ]

A. that she will come to school today

B. whether will she come to school today

C. how will she come to school today

D. if she will come to school today