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.

Input: Consider Input: Problem: the salary of a person was reduced by 14 %. by what percent should his reduced salary be raised so as to bring it at par with his original salary ?
Options: a. 10 %, b. 16.3 %, c. 13.7 %, d. 15.1 %, e. 12.3 %

Output: b


Input: Consider Input: Problem: how many integers v are prime numbers in the range 200 < v < 220 ?
Options: a. 1, b. 2, c. 3, d. 4, e. 5

Output: a


Input: Consider Input: Problem: every year an amount increases by 1 / 8 th of itself. how much will it be after two years if its present value is rs. 57600 ?
Options: a. 81000, b. 81028, c. 27772, d. 72900, e. 22312


Output: d