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: Ajay marked the price of his goods 30% more than his C.P. He then sells 1/4th of his stock at a discount of 15%, and half of the stock at the marked price, and the rest at a discount of 30%. Find his gain percentage.

Option A: 16.5%

Option B: 15.375%

Option C: 14.20%

Option D: 13.37%

Option E: None of these

Output: Option B

Input: Consider Input: Question: Three persons invested Rs.9000 in a joint business. The second person invested Rs.1000 more than the first and the third Rs.1000 more than second. After two years, they gained Rs.5400. How much third person will get?

Option A: Rs.2400

Option B: Rs.3600

Option C: Rs.2850

Option D: Rs.2000

Option E: Rs.3000

Output: Option A

Input: Consider Input: Question: A man in a train notices that he can count 41 telephone posts in one minute. If they are known to be 50 metres apart, then at what speed is the train travelling?

Option A: 620 km/hr

Option B: 220 km/hr

Option C: 220 km/hr

Option D: 120 km/hr

Option E: 203 km/hr
Output: Option D