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: A man rows to a place 48 km distant and come back in 14 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. The rate of the stream is:

Option A: 2 km/hr

Option B: 1 km/hr

Option C: 4 km/hr

Option D: 6 km/hr

Option E: 5 km/hr

Output: Option B

Input: Consider Input: Question: Q is as much younger than R as he is older than T. If the sum of the ages of R and T is 50 years, what is definitely the difference between R and Q's age?

Option A: 23

Option B: 28

Option C: 25

Option D: 19

Option E: 11

Output: Option C

Input: Consider Input: Question: On a shelf, 2 books of Geology, 2 books of Sociology and 5 of Economics are to be arranged in such a way that the books of any subject are to be together. Find in how many ways can this be done?

Option A: 2880

Option B: 2778

Option C: 2682

Option D: 8222

Option E: 6282
Output: Option A