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: the price of 2 sarees and 4 shirts is rs. 1600. with the same money one can buy 1 saree and 6 shirts. if one wants to buy 12 shirts, how much shall he have to pay ?
Options: a. 2500, b. 2700, c. 2200, d. 2900, e. 2400
Output:
e