_____ that it was sold out when it came out. [ ]

A. So was her successful book

B. So successful was her book

C. So her book was successful

D. So successful her book was

下列大气污染因子中，既属于环境空气常规项目，又属于大气污染物总量控制指标的是( )。

A．烟尘

B．TSP

C．NO_x

D．SO₂