—David, turn off the TV _____ no one is watching it.

—But it _____ off already! The music is from the radio.[ ]

A. so that; has been turned

B. when; has turned

C. if; has been turned

D. because; has turned

如果全聚德在日本开店，假如把当地的养鸭场收购了，那么实施该并购案所采取的战略是( )。

A．多元化战略

B．前向一体化

C．横向一体化

D．后向一体化