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.

Example Input: Problem: ramesh purchased a refrigerator for rs. 12500 after getting a discount of 20 % on the labelled price. he spent rs. 125 on transport and rs. 250 on installation. at what price should it be sold so that the profit earned would be 18 % if no discount was offered ?
Options: a. 17608, b. 17606, c. 17604, d. 17600, e. 18880
Example Output: e

Example Input: Problem: the mean of 50 observations is 200. but later he found that there is decrements of 34 from each observations. what is the the updated mean is ?
Options: a. 165, b. 166, c. 190, d. 198, e. 199
Example Output: b

Example Input: Problem: if sharon ' s weekly salary increased by 16 percent, she would earn $ 348 per week. if instead, her weekly salary were to increase by 15 percent, how much would she earn per week ?
Options: a. $ 374, b. $ 382, c. $ 345, d. $ 392, e. $ 399
Example Output:
c