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.

Ex Input:
Problem: the batting average of a particular batsman is 60 runs in 46 innings. if the difference in his highest and lowest score is 140 runs and his average excluding these two innings is 58 runs, find his highest score.
Options: a. 179, b. 367, c. 269, d. 177, e. 174

Ex Output:
e


Ex Input:
Problem: a is twice as good a work man as b and together they finish the work in 4 days. in how many days a alone can finish the work ?
Options: a. 3, b. 2, c. 7, d. 9, e. 6

Ex Output:
e


Ex Input:
Problem: a person travels equal distances with speeds of 3 km / hr, 4 km / hr and 5 km / hr and takes a total time of 54 minutes. the total distance is ?
Options: a. 1 km, b. 2 km, c. 3 km, d. 3.4 km, e. 5 km

Ex Output:

d