Which of the following situations would combine to make zero?



A.
Deng's rough draft of his essay was three pages long. After he rewrote the essay, the final draft was also three pages long.

B.
Last week, Mark earned 20 loyalty points at a retail store by buying his groceries there. This week, he earned 20 loyalty points by buying a camera.

C.
In the first month of the semester, Edith read about 150 pages of fiction for her English course. In the second month, she read about 150 pages of nonfiction.
D.
Last weekend, Juanita's ​