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 many 4 - digit numbers that do not contain the digits 2, 3, 4, 5, 6, or 7 are there ?
Options: a. 168, b. 176, c. 184, d. 192, e. 200

Output: d


Input: Consider Input: Problem: if 32.5 % of the 880 students at a certain college are enrolled in biology classes, how many students at the college are not enrolled in a biology class ?
Options: a. 110, b. 330, c. 550, d. 594, e. 880

Output: d


Input: Consider Input: Problem: if 5 and 8 are factors of 60 n, what is the minimum value of n ?
Options: a. 2, b. 3, c. 7, d. 14, e. 56


Output: a