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: If 12 men do a work in 80 days, in how many days will 16 men do it?

Option A: 17 days

Option B: 19 days

Option C: 15 days

Option D: 60 days

Option E: 14 days

Answer: Option D

Question: Question: If x is an integer such that 5 < x < 21, 7 < x < 18, 13 > x > 2, 12 > x > 9, and x + 1 < 13, then x is

Option A: 3

Option B: 5

Option C: 7

Option D: 9

Option E: 11

Answer: Option E

Question: Question: In 1937, the ship of the great sailor SINBAD left an Egyptian port heading Ivory coast at E mile/month .
One month later another ship of the greatest pirate ever CHENG I SAO was 5000 miles due south of the same Egyptian port and heading due north at Y miles/month. Six months later after the leaving of Sinbad's ship from Egyptian port, how far apart were the ships? [Ivory coast is in the west of Egypt]

Option A: { (6E

Option B: { (36x

Option C: { (16x

Option D: { (7x

Option E: { (2x

Answer:
Option A