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.

Q: 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

A: Option B
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Q: Question: How many zeroes are there at the end of the number N, if N = 150! + 300! ?

 Option A: 28

 Option B: 31

 Option C: 34

 Option D: 37

 Option E: 40

A: Option D
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Q: Question: The cash difference between the selling prices of an article at a profit of 4% and 6% is Rs. 3. The ratio of the two selling prices is?

 Option A: 52:56

 Option B: 52:53

 Option C: 52:50

 Option D: 22:56

 Option E: 52:51

A:
Option B
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