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: a shop owner professes to sell his articles at certain cost price but he uses false weights with which he cheats by 12 % while buying and by 30 % while selling. what is his percentage profit ?
Options: a. 10.22 %, b. 20.22 %, c. 21.22 %, d. 60 %, e. ca n ' t be calculated

Ex Output:
d


Ex Input:
Problem: 12. what is the dividend. divisor 17, the quotient is 9 and the remainder is 10.
Options: a. 150, b. 152, c. 154, d. 163, e. 144

Ex Output:
d


Ex Input:
Problem: eight identical machines can produce 360 aluminum cans per hour. if all of the machines work at the same constant rate, how many cans could 5 such machines produce in 7 hours ?
Options: a. 675, b. 750, c. 1,800, d. 5,900, e. 1,575

Ex Output:

e