What will happen in the middle of the 21st century if we consume resources much faster th

What will happen in the middle of the 21st century, if we consume resources much faster than their replacement？

A．We can have another planet called the Earth.

B．We will use up resources on Earth.

C．We will work out replaceable resources.

D．We will migrate to another planet to live.

请帮忙给出正确答案和分析，谢谢！