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.

[EX 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
[EX A]: Option D

[EX Q]: Question: There are 3 questions in a question paper. If the questions have 4,3 and 2 solutions respectively, find the total number of solutions

 Option A: 24

 Option B: 25

 Option C: 30

 Option D: 40

 Option E: 54
[EX A]: Option A

[EX Q]: Question: The sum of two numbers is 29 and the difference of their squares is 145. The difference between the number is

 Option A: 13

 Option B: 5

 Option C: 8

 Option D: 11

 Option E: 12
[EX A]:
Option B