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: You are renting an apartment and you need √676 for each side, how many feet are you looking to measure?

 Option A: 21

 Option B: 22

 Option C: 23

 Option D: 24

 Option E: 26
[A]: Option E


[Q]: Question: What is the units digit of 18! + 5 ?

 Option A: 2

 Option B: 3

 Option C: 4

 Option D: 5

 Option E: 6
[A]: Option D


[Q]: Question: P is three times as fast as Q and working together, they can complete a work in 18 days. In how many days can Q alone complete the work?

 Option A: 24

 Option B: 77

 Option C: 88

 Option D: 55

 Option E: 778
[A]:
Option A