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: what is the smallest number which, when increased by 7, is divisible by 8, 11, and 24 ?
Options: a. 264, b. 257, c. 269, d. 270, e. 282
Example Output: b

Example Input: Problem: if x gets 25 % more than y and y gets 20 % more than z, the share of z out of rs. 1110 will be :
Options: a. rs. 300, b. rs. 200, c. rs. 240, d. rs. 350, e. none of these
Example Output: a

Example Input: Problem: if 3 people can do 3 times of a particular work in 3 days, then how many days would it take 9 people to do 9 times of that particular work ?
Options: a. 1, b. 2, c. 3, d. 9, e. 12
Example Output:
c