Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.

Ex Input:
Problem: on the independence day, bananas were be equally distributed among the children in a school so that each child would get two bananas. on the particular day 360 children were absent and as a result each child got two extra bananas. find the actual number of children in the school ?
Options: a. 237, b. 287, c. 197, d. 287, e. 720

Ex Output:
e


Ex Input:
Problem: 108 ã — 108 + 92 ã — 92 = ?
Options: a. 20120, b. 11500, c. 20128, d. 20660, e. 20228

Ex Output:
c


Ex Input:
Problem: a football field is 8400 square yards. if 1200 pounds of fertilizer are spread evenly across the entire field, how many pounds of fertilizer were spread over an area of the field totaling 3500 square yards ?
Options: a. 450, b. 600, c. 500, d. 2400, e. 3200

Ex Output:

c