Warning of air pollution

China's environmental watchdog demanded local governments take measures during the Lunar New Year celebrations to lessen pollution caused by fireworks. Local governments should limit fireworks displays, expand restricted areas and reinforce check-ups if weather conditions are not suitable for pollutants to disperse, said the Ministry of Environmental Protection. The ministry asked local governments to designate time and area for firework display, review retailers' qualifications and promote environmentally-friendly fireworks.

What should local governments do if weather conditions are not suitable for pollutants to disperse?

A. They should review fireworks' qualifications

B. They should limit fireworks displays

C. They should promote environmentally-friendly fireworks

（中国日报网英语点津 许晶晶 编辑）