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.

Example Input: Problem: you have been given a physical balance and 7 weights of 40, 42, 36, 33, 47, 52 and 67 kgs. keeping weights on one pan and object on the other, what is the maximum you can weigh less than 169 kgs.
Options: a. 163, b. 166, c. 162, d. 164, e. 165
Example Output: e

Example Input: Problem: on her annual road trip to visit her family in seal beach, california, traci stopped to rest after she traveled 1 3 of the total distance and again after she traveled 1 4 of the distance remaining between her first stop and her destination. she then drove the remaining 300 miles and arrived safely at her destination. what was the total distance, in miles, from traci ' s starting point to seal beach ?
Options: a. 600, b. 300, c. 350, d. 400, e. 550
Example Output: a

Example Input: Problem: in a forest 10 rabbits were caught, tagged with electronic markers, then released. a month later, 10 rabbits were captured in the same forest. of these 10 rabbits, it was found that 2 had been tagged with the electronic markers. if the percentage of tagged rabbits in the second sample approximates the percentage of tagged rabbits in the forest, and if no rabbits had either left or entered the forest over the preceding month, what is the approximate number of rabbits in the forest ?
Options: a. 150, b. 70, c. 50, d. 1500, e. 500
Example Output:
c