Which of the following statements accurately differentiates commoners from slaves in maya society?

Below are the choices:

A.Commoners were generally captured during wars, while slaves were born on Maya farms.
 B.Commoners earned money through labor or craftsmanship, while slaves were not paid for their work.
 C.Commoners were relatives of the Maya king, while slaves were exclusively from non-Maya states.
 D.Commoners served in important government positions, while slaves generally performed hard labor.

I think the answer is B.