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 Q]: Question: Every year an amount increases by 1/8th of itself. How much will it be after two years if its present value is Rs.1600?

 Option A: 3000

 Option B: 4200

 Option C: 2025

 Option D: 1205

 Option E: 3251
[EX A]: Option C

[EX Q]: Question: Two trains, each 100 m long, moving in opposite directions, cross other in 6 sec. If one is moving twice as fast the other, then the speed of the faster train is?

 Option A: 80 km/hr

 Option B: 66 km/hr

 Option C: 60 km/hr

 Option D: 67 km/hr

 Option E: 22 km/hr
[EX A]: Option A

[EX Q]: Question: Look at this series: 97, 97, 97, 87, 87, 87, 67, 67, 67 ... What number should come next?

 Option A: 47

 Option B: 57

 Option C: 45

 Option D: 48

 Option E: 55
[EX A]:
Option B