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: how much is 60 % of 40 is greater than 4 / 5 of 30 ?
Options: a. 8, b. 3, c. 7, d. 0, e. 1

Output: d


Input: Consider Input: Problem: a bag contains 21 toys numbered 1 to 21. a toy is drawn and then another toy is drawn without replacement. find the probability that both toys will show even numbers.
Options: a. 5 / 21, b. 9 / 42, c. 6 / 22, d. 4 / 21, e. 3 / 21

Output: b


Input: Consider Input: Problem: selling an kite for rs. 30, a shop keeper gains 15 %. during a clearance sale, the shopkeeper allows a discount of 10 % on the marked price. his gain percent during the sale is ?
Options: a. 3.5 %, b. 10 %, c. 11 %, d. 15 %, e. 20 %


Output: a