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: We have boxes colored either red or blue. In each blue box there is a fixed number of blueberries. In each red box there is a fixed number of strawberries. If we dispose of one blue box for one additional red box, the total number of berries would increase by 12, and the difference between the total number of strawberries and the total number of blueberries would increase by 76. Each blue box contains how many blueberries?

 Option A: 26

 Option B: 28

 Option C: 30

 Option D: 32

 Option E: 34
[EX A]: Option D

[EX Q]: Question: A boat can travel with a speed of 25km/hr in still water. If the speed of the stream is 5km/hr, find the time taken by the boat to go 120km downstream.

 Option A: 1 hr

 Option B: 2 hrs

 Option C: 3 hrs

 Option D: 4 hrs

 Option E: 5 hrs
[EX A]: Option D

[EX Q]: Question: The sum of the mean, the median, and the range of the set {5, 7, 9} equals which one of the following values?

 Option A: 27

 Option B: 45

 Option C: 62

 Option D: 22

 Option E: 10
[EX A]:
Option D