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.
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Question: Question: In what time will a train 200 m long cross an electric pole, it its speed be 144 km/hr?

Option A: 2 sec

Option B: 2.7 sec

Option C: 3.5 sec

Option D: 5 sec

Option E: 9.5 sec

Answer: Option D

Question: Question: Twelve participants are participating in a competition. In how many ways can the first three prizes be won?

Option A: 1320

Option B: 680

Option C: 820

Option D: 720

Option E: 620

Answer: Option A

Question: Question: A metallic sphere of radius 12 cm is melted and drawn into a wire, whose radius of cross section is 16 cm. What is the length of the wire?

Option A: 7 cm

Option B: 6 cm

Option C: 5 cm

Option D: 1 cm

Option E: 9 cm

Answer:
Option E