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: On dividing a number by 7, we get 5 as quotient and 0 as remainder. On dividing the same number by 11, what will be the remainder?

 Option A: 2

 Option B: 5

 Option C: 8

 Option D: 1

 Option E: 3
[A]: Option A


[Q]: Question: One half of the workers at the biscuit company is technician,quarter is clerk,one-fifth are administrative and the other 25 are supervisors. How many workers total are there in the biscuit company?

 Option A: 250

 Option B: 366

 Option C: 400

 Option D: 500

 Option E: 2500
[A]: Option D


[Q]: Question: Five drainage pipes, each draining water from a pool at the same constant rate, together can drain a certain pool in 12 days. How many additional pipes V, each draining water at the same constant rate, will be needed to drain the pool in 4 days?

 Option A:  6

 Option B:  9

 Option C:  10

 Option D:  12

 Option E:  15
[A]:
Option C