Which of the following would not be a good supporting sentence for an example paragraph with the following topic sentence? My Teacher often rewards us for doing well in math or science.

A. She encourages us to read and write well, too.
O B. And just last week she gave us all some coupons for the local
movie theater when we used science and math skills as part of a
community project.
O C. Once she let us have a longer recess after we solved a difficult
calculus problem
O D. Another time she let us bring in and play CDs as a reward for
studying the human genome.