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 and B complete a job in 6 days. A alone can do the job in 15 days. If B works alone, how many days will it take to complete the job?

Option A: 8

Option B: 10

Option C: 12

Option D: 14

Option E: 16

A: Option B
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Q: Question: If the average (arithmetic mean) of x, x + 2, and x + 4 is 33, what is the value of x?

Option A: 30

Option B: 31

Option C: 32

Option D: 32

Option E: 37

A: Option B
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Q: Question: Six fencers participate in a fencing championship. Assuming all competitors have an equal chance of winning, how many possibilities are there with respect to how a first-place and second-place medal can be awarded?

Option A: 20

Option B: 24

Option C: 25

Option D: 30

Option E: 36

A:
Option D
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