Which of these sentences could be added to the end of the third paragraph (sentences 14-16) to support the ideas in that paragraph?
A.
I can make higher grades if I study hard for tests and do my homework on time.
B.
One boy in my class made zeroes in four of his classes because he never worked.
C.
This grading difference creates an unfair comparison between students.
D.
Each school has its own school board that makes decisions about policies.