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: 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


[Q]: 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
[A]: Option A


[Q]: Question: Sheik Abdullah decides to buy 3 new cars for his collection. If he has to choose between nine different cars, what is the number of purchasing possibilities he has?

 Option A: A

 Option B: B

 Option C: C

 Option D: D

 Option E: E
[A]:
Option C