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 is the normal price of an article sold at $ 72 after two successive discounts of 10 % and 20 % ?
Options: a. $ 92, b. $ 96, c. $ 100, d. $ 104, e. $ 108

Output: c


Input: Consider Input: Problem: what is the smallest positive integer x such that 66 - x is the cube of a positive integer
Options: a. 5, b. 7, c. 47, d. 9, e. 2

Output: e


Input: Consider Input: Problem: a theater charges $ 12 for seats in the orchestra and $ 8 for seats in the balcony. on a certain night, a total of 340 tickets were sold for a total cost of $ 3,320. how many more tickets were sold that night for seats in the balcony than for seats in the orchestra ?
Options: a. 40, b. 110, c. 120, d. 130, e. 220


Output: a