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: The population of a certain town increases by 50 percent every 50 years. If the population in 1950 was 810, in what year was the population 160?

 Option A: 1650

 Option B: 1700

 Option C: 1750

 Option D: 1800

 Option E: 1850
[A]: Option C


[Q]: Question: If |x + 2| = 10, what is the sum of all the possible values of x?

 Option A: -16

 Option B: -13

 Option C: -4

 Option D: -2

 Option E: 12
[A]: Option C


[Q]: Question: If the average marks of three batches of 40, 50 and 60 students respectively is 45, 55, 65, what is the average marks of all the students?

 Option A: 56.33

 Option B: 34.89

 Option C: 23.67

 Option D: 54.65

 Option E: 43.98
[A]:
Option A