Coal is renewable, and the sun is renewable. Coal is renewable, and the sun is nonrenewable. Coal is nonrenewable, and the sun is renewable. Coal is nonrenewable, and the sun is nonrenewable.
I gave my students this multiple choice question: How do coal and the sun compare as sources of energy?

Only one answer is correct among these 4 choices:
- Coal is renewable, and the sun is renewable.
- Coal is renewable, and the sun is nonrenewable.
- Coal is nonrenewable, and the sun is renewable.
- Coal is nonrenewable, and the sun is nonrenewable.

Could you tell me which one is correct?

Coal is nonrenewable, and the sun is renewable.