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.

Ex Input:
Problem: set a contains all the even numbers between 2 and 50 inclusive. set b contains all the even numbers between 62 and 110 inclusive. what is the difference between the sum of elements of set b and the sum of the elements of set a ?
Options: a. 1500, b. 3100, c. 4400, d. 6200, e. 7400

Ex Output:
a


Ex Input:
Problem: p has $ 32 more than what q and r together would have had if both b and c had 1 / 6 of what p has. how much does p have ?
Options: a. $ 44, b. $ 48, c. $ 52, d. $ 56, e. $ 60

Ex Output:
b


Ex Input:
Problem: as a treat for her two children, a mother runs to the freezer in which she has 3 cherry ice pops, 4 orange ice pops, and 4 lemon ice pops. she chooses two at random to bring outside to the children, but realizes as she runs out the door that she can not bring them different flavors without one being jealous of the other and getting even more upset. what is the probability that she has to return to the freezer to make sure that they each receive the same flavor ?
Options: a. 3 / 5, b. 5 / 7, c. 8 / 11, d. 11 / 15, e. 13 / 20

Ex Output:

c