Definition: 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 the difference between the length and breadth of a rectangle is 23 m and its perimeter is 266 m, what is its area ?
Options: a. 4290, b. 2535, c. 2530, d. 2515, e. 2520
Output:
a