Inside the White House, there is a room called the Oval Office. That's ________ President Obama works.

A．why

B．where

C．what

D．how

“本息分别还款”业务的整笔贷款还款期数为（）.

A、本金还款期数

B、利息还款期数

C、本金还款期数与利息还款期数之和

D、本金还款期数与利息还款期数的较大值