Instructions: 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: Problem: a work crew of 6 men takes 8 days to complete one - half of a job. if 9 men are then added to the crew and the men continue to work at the same rate, how many days will it take the enlarged crew to do the rest of the job ?
Options: a. 2, b. 3, c. 3 1 / 5, d. 4, e. 4 4 / 5
Output:
c