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: If |x^2 − 20| = x, which of the following could be the value of x?

 Option A: -5

 Option B: -4

 Option C: 1

 Option D: 4

 Option E: 10
[A]: Option D


[Q]: Question: How many factors does 36^2 have?

 Option A: 2

 Option B: 8

 Option C: 24

 Option D: 25

 Option E: 26
[A]: Option D


[Q]: Question: The manufacturing cost of a shoe is Rs.220 and the transportation lost is Rs.500 for 100 shoes. What will be the selling price if it is sold at 20% gains

 Option A: s 222

 Option B: s 216

 Option C: s 220

 Option D: s 270

 Option E: s 217
[A]:
Option D