Which of the following best approximates the amount by which the increase ... ...

Which of the following best approximates the amount by which the increase in sales of fiction titles from 1985 to 1986 exceeded the increase in sales of fiction titles from 1983 to 1984?
(A)    31.5 thousand
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Nova Math - Problem Set W: Graphs