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: what least number must be subtracted from 13294 so that the remainder is exactly divisible by 97 ?
Options: a. 3, b. 5, c. 7, d. 9, e. 10

Output: b

Input: Consider Input: Problem: a man sitting in a train which is traveling at 36 kmph observes that a goods train, traveling in opposite direction, takes 10 seconds to pass him. if the goods train is 240 m long, find its speed
Options: a. 50 kmph, b. 56 kmph, c. 58 kmph, d. 62 kmph, e. 72 kmph

Output: a

Input: Consider Input: Problem: walking at 5 / 6 th of its usual speed a cab is 15 mnts late. find its usual time to cover the journey ?
Options: a. 25 m, b. 45 m, c. 32 m, d. 75 m, e. 62 m
Output: d