According to the passage, the heated disputes in the annual IWC conference were about_____

According to the passage, the heated disputes in the annual IWC conference were about______.

A．the urgency of handling new threats to whales

B．the small native groups" right of whale hunting

C．the poor management of fishing

D．the drilling of oil in Arctic

请帮忙给出正确答案和分析，谢谢！