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: mary works in a restaurant a maximum of 70 hours. for the first 20 hours, she is paid $ 8 per hour. for each overtime hour, she is paid at a rate which is 25 % higher than her regular rate. how much mary can earn in a week ?
Options: a. 600, b. 620, c. 660, d. 320, e. 400

Output: c


Input: Consider Input: Problem: mrs. evans gave a test to her freshmen economics class, which has 29 students enrolled and 19 of them answered question 1 correctly. if 24 answered question 2 correctly and 5 did not take the test then how many answered both questions correctly ?
Options: a. 3, b. 9, c. 11, d. 17, e. 19

Output: e


Input: Consider Input: Problem: workers at a campaign office have 3000 fliers to send out. if they send out 1 / 5 of them in the morning and 1 / 4 of the remaining ones out during the afternoon, how many are left for the next day ?
Options: a. 1800, b. 800, c. 1100, d. 1200, e. 1900


Output: a