Which answer describes the simpler problems that could be used to solve this story problem? Jackson read some books over the summer. He read 3 science fiction books and 2 mystery books each month. He also read 3 times as many adventure books as mystery books each month. How many books did Jackson read in one month?

ACalculate the number of adventure books Jackson reads each month. Subtract the number of adventure books from the number of mystery and science fiction books.

BCalculate how many more science fiction books than mystery books Jackson reads each month. Add that answer to the number of science fiction books and adventure books.

CCalculate the number of adventure books Jackson reads each month. Add the number of adventure books to the number of science fiction and mystery books.

DCalculate how many more science fiction books than mystery books Jackson reads each month. Multiply the answer by 3. Add that answer to the number of science fiction books and mystery books.