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.

Input: Consider 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

Output: Option B


Input: Consider Input: Question: A man took a loan at rate of 12% per annum simple interest. After 3 years he had to pay 4320 interest. The principal amount borrowed by him was.

 Option A: Rs 14000

 Option B: Rs 15000

 Option C: Rs 12000

 Option D: Rs 17000

 Option E: None of these

Output: Option C


Input: Consider Input: Question: What will be the compound interest on a sum of Rs. 24,500 after 3 years at the rate of 12% p.a.?

 Option A: s.9920.736

 Option B: s.10823.20

 Option C: s.10123.20

 Option D: s.10123.29

 Option E: s.10123.28


Output: Option A