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: Find the greatest number which on dividing 1255 and 1490, leaves a reminder of 8 and 11 respectively

 Option A: 27

 Option B: 29

 Option C: 33

 Option D: 39

 Option E: 41
[EX A]: Option B

[EX Q]: Question: If the average (arithmetic mean) of five consecutive negative integers is 8k – 1, what is the difference between the greatest and least of the five integers?

 Option A: 4K

 Option B: 4k^2 -4k

 Option C: 4-4k

 Option D: 4

 Option E: 4k+4
[EX A]: Option D

[EX Q]: Question: Three years ago the average age of a family of seven members was 22 years. A boy have been born, the average age of the family is the same today. What is the age of the boy?

 Option A: A

 Option B: B

 Option C: C

 Option D: D

 Option E: E
[EX A]:
Option A