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: if a no. when divided by 44, gives 432 as quotient and 0 as remainder. what will be the remainder when dividing thesame no. by 31
Options: a. 2, b. 4, c. 5, d. 7, e. 8
Example Output: c

Example Input: Problem: arjun started a business with rs. 20,000 and is joined afterwards by anoop with rs. 30, 000. after how many months did anoop join if the profits at the end of the year are divided equally ?
Options: a. 3, b. 4, c. 5, d. 6, e. 7
Example Output: b

Example Input: Problem: a 5 - digit number is formed by the digits 2, 45, 68 ( each digit used exactly once.. what is the probability that the number formed is divisible by 4 ?
Options: a. 2 / 5, b. 3 / 5, c. 4 / 5, d. 6 / 5, e. 7 / 5
Example Output:
a