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: If 5 ministers are to be seated at a round table conference, then how many different ways can they be seated?

 Option A: 240

 Option B: 60

 Option C: 24

 Option D: 720

 Option E: 180
[EX A]: Option C

[EX Q]: Question: The ratio between the number of passengers travelling by I and II class between the two railway stations is 1 : 50, whereas the ratio of I and II class fares between the same stations is 3 : 1. If on a particular day Rs. 1,325 were collected from the passengers travelling between these stations, then what was the amount collected from the II class passengers?

 Option A: Rs. 750

 Option B: Rs. 1000

 Option C: Rs. 850

 Option D: Rs. 1250

 Option E: None of these
[EX A]: Option D

[EX Q]: Question: Which of the following functions f(x) satisfies the condition f(y-z) = f(y)-f(z) for all possible values of y and z?

 Option A: f(x

 Option B: f(x

 Option C: f(x

 Option D: f(x

 Option E: f(x
[EX A]:
Option E