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: a no. when divided by 281 gives a remainder 160, what remainder will be obtainedby dividingthe same no. 21 ?
Options: a. 21, b. 22, c. 23, d. 24, e. 25

Output: a


Input: Consider Input: Problem: ray writes a two digit number. he sees that the number exceeds 4 times the sum of its digits by 3. if the number is increased by 18, the result is the same as the number formed by reversing the digits. find the number.
Options: a. 2, b. 5, c. 6, d. 7, e. 8

Output: b


Input: Consider Input: Problem: the difference between simple interest and compound interest on rs. 1400 for one year at 20 % per annum reckoned half - yearly is :
Options: a. $ 185.63, b. $ 852.36, c. $ 875.5, d. $ 989.9, e. $ 875.8


Output: d