Study the given graph and answer the question that follows

What is the ratio of the total production of paper by company A in 2016 and 2019 to the total production of paper by company B in 2014 and 2017?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 9 : 7.
The total production of paper by company A in 2016 and 2019 = (120 + 150) = 270
The total production of paper by company B in 2014 and 2017 = (60 + 150) = 210
Required ratio = 270 : 210 = 9 : 7