How many hippos are kept in Queen Elizabeth National Park now？A．About 14,000.B．No more tha

How many hippos are kept in Queen Elizabeth National Park now？

A．About 14,000.

B．No more than 14,000.

C．No more than 4,000.

D．About 4,000.

请帮忙给出正确答案和分析，谢谢！