—Come in and have a look．Where can you find a so high-quality gift for your loved ones?

—______．Thank you．We have no intension to buy．

A．That just depends

B．Let us be

C．It’s nothing

D．Take it easy

在长期条件下，总供给曲线是( )。

A．垂直的充分就业产量的曲线

B．垂直的非充分就业产量的曲线

C．水平的充分就业产量的曲线

D．水平的非充分就业产量的曲线