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: if there are 86 workers in a factory, and on a certain day, 72 were present. calculate the percentage that showed up for work ? ( round to the nearest tenth ).
Options: a. 82.7 %, b. 81.7 %, c. 83.7 %, d. 89.7 %, e. 88.7 %
Output:
c