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: The greatest number of four digits which is divisible by 15, 25, 40 and 75 is:

 Option A: 9400

 Option B: 9600

 Option C: 9800

 Option D: 9000

 Option E: 9200

Ex Output:
Option B


Ex Input:
Question: Rob traveled a distance of 30 km, covering the first 10 km in x minutes, the next 10 km in y minutes and the last 10 km in z minutes. If he totally took 3y minutes to cover the whole distance, then which of the following cannot be true? Assume x , y and z are different.

 Option A: z=3x

 Option B: x=3z

 Option C: y=2x

 Option D: x=2y

 Option E: y=3x

Ex Output:
Option D


Ex Input:
Question: Cost of 16 mirror and 8 comb is Rs.328 and the cost of 4 mirror and 4 comb is Rs.96. Find the cost of each mirror?

 Option A: 10

 Option B: 12

 Option C: 17

 Option D: 21

 Option E: 22

Ex Output:

Option C