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 box contains 9 pairs of shoes (18 shoes in total). If two shoes are selected at random, what it is the probability that they are matching shoes?

 Option A: 1/190

 Option B: 1/17

 Option C: 1/19

 Option D: 1/10

 Option E: 1/9

A: Option B
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Q: Question: Marge has 3 pumps for filling her swimming pool. When all 3 pumps work at their maximum rates, the swimming pool is filled in 66 minutes. Pump 1's maximum rate is twice the maximum rate of pump 2 and four times the maximum rate of pump 3. How long would it take Marge to fill the pool if she used only pump 3 at its maximum rate ?

 Option A: 2hrs, 48mins

 Option B: 6hrs, 32mins

 Option C: 7hrs, 12mins

 Option D: 13hrs, 4mins

 Option E: 7hrs, 42mins

A: Option E
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Q: Question: Abhijit started a business investing 4000. Anuja joined him after six months with an amount of 8000 and Sunil joined them with 12,000 after another six months. The amount of profit earned should be distributed in what ratio among Abhijit, Anuja and Sunil respectively, two years after Abhijit started the business?

 Option A: 2 : 4 : 3

 Option B: 2 : 4 : 4

 Option C: 2 : 5 : 5

 Option D: 2 : 3 : 3

 Option E: 2 : 5: 3

A:
Option D
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