问题详情

Air-conditioning may have ill effect on human body in all of the following ways EXCEPT that______.

A．much exposure may make people feel annoyed

B．harmful chemicals in the ventilation system may cause cancers

C．much exposure to low temperature may cause immune diseases

D．people may suffer from headache in an air-conditioned office

请帮忙给出正确答案和分析，谢谢！