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 it takes 4 identical printing presses exactly 4 hours to print 8,000 newspapers, how long would it take 2 of these presses to print 6,000 newspapers?

 Option A: 6 hours

 Option B: 8 hours

 Option C: 7 hours

 Option D: 5 hours

 Option E: 9 hours
[EX A]: Option A

[EX Q]: Question: What does the hexa number E78 in radix 7.

 Option A: 12455

 Option B: 14153

 Option C: 14256

 Option D: 13541

 Option E: 14541
[EX A]: Option D

[EX Q]: Question: A batsman makes a score of 87 runs in the 17th inning and thus increases his averages by 3.Find his average after 17th inning?

 Option A: 19

 Option B: 29

 Option C: 39

 Option D: 49

 Option E: 59
[EX A]:
Option C