Study the given graph and answer the question that follows.

In which year was the percentage increase in the revenue as compared to that in its preceding year below 6%?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 2017
Increase% in 2019 = 20/280 × 100 = 7.14%
Increase% in 2016 = 30/350 × 100 = 8.57%
Increase% in 2015 = 30/320 × 100 = 9.37%
Increase% in 2017 = 20/380 × 100 = 5.2%
In 2017 the percentage increase in the revenue as compared to the preceding year is below 6%.