Detailed 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.
Problem:Problem: the total age of a and b is 12 years more than the total age of b and c. c is how many year younger than a
Options: a. 11, b. 12, c. 13, d. 14, e. 15
Solution:
b