You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

Ex Input:
Question: A sum of Rs.4800 is invested at a compound interest for three years, the rate of interest being 10% p.a., 20% p.a. and 25% p.a. for the 1st, 2nd and the 3rd years respectively. Find the interest received at the end of the three years?

Option A: Rs.3129

Option B: Rs.3120

Option C: Rs.3108

Option D: Rs.3106

Option E: Rs.3127

Ex Output:
Option B

Ex Input:
Question: A box contains 9 pairs of shoes (18 shoes in total). If two shoes are selected at random, what it is the probability that they are matching shoes?

Option A: 1/190

Option B: 1/17

Option C: 1/19

Option D: 1/10

Option E: 1/9

Ex Output:
Option B

Ex Input:
Question: In a bag, there are coins of 25 p, 10 p and 5 p in the ratio of 1 : 2 : 3. If there is
Rs. 30 in all, how many 5 p coins are there?

Option A: 150

Option B: 130

Option C: 120

Option D: 110

Option E: 140

Ex Output:
Option A