问题详情

A team of American and Canadian scientists discovered that

A．underwater explosions caused whales" losing of their hearing.

B．some of the whales died as a result of seawater pollution.

C．only whales could stand the noise caused by explosions.

D．whales" ears bled and became infected as a result of unknown illness.

请帮忙给出正确答案和分析，谢谢！