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.

Example Input: Question: If the 15th day of a month is three days earlier than Saturday, What day will it be on the 24th day of the month?

Option A: Saturday

Option B: Monday

Option C: Sunday

Option D: Wednesday

Option E: Friday
Example Output: Option E

Example Input: Question: In the arithmetic sequence t1, t2, t3, ..., tn, t1=23 and tn= tn-1 - 3 for each n > 1. What is the value of n when tn = 8?

Option A: -1

Option B: 6

Option C: 10

Option D: 14

Option E: 20
Example Output: Option B

Example Input: Question: 5 men and 12 boys finish a piece of work in 4 days, 7 men and 6 boys do it in 5 days. The ratio between the efficiencies of a man and boy is?

Option A: 6:8

Option B: 6:4

Option C: 6:2

Option D: 6:5

Option E: 6:2
Example Output:
Option D