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's speed with the current is 20 kmph and speed of the current is 3 kmph. The Man's speed against the current will be

Option A: 11 kmph

Option B: 12 kmph

Option C: 14 kmph

Option D: 17 kmph

Option E: None of these

A: Option C
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Q: Question: How many positive integers G less than 10,000 are such that the product of their digits is 210?

Option A: 24

Option B: 30

Option C: 48

Option D: 54

Option E: 72

A: Option D
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Q: Question: A train passes a station platform in 32 seconds and a man standing on the platform in 12 seconds. If the speed of the train is 72 km/hr, what is the length of the platform?

Option A: 340

Option B: 360

Option C: 380

Option D: 400

Option E: 420

A:
Option D
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