如图，P、Q两枚小磁针分别放在通电螺线管的正上方和右侧．闭合电键，小磁针静止时N极的指向是（　　）

A．P、Q均向左

B．P、Q均向右

C．P向左，Q向右

D．P向右，Q向左

The customers objected _____unfairly in the course of shopping.

A．to be treated

B．their being treated

C．to being treated

D．having been treated