Janice owned 17 books and bought 5 new books each month. Eunice owned 27 books and bought 3 new books each month. The graph below shows the number of books each student owned over a 12-month period.

A. Each student owned 42 books on the fifth month.

B. The students had 42 books altogether on the fifth month.

C. Each student owned 27 books on the second month.

D. The students had 27 books altogether before the first month.