The line chart given below shows the ratio of poduction to sales of two bike-manufacturing firms over the period of 6 years.

Assume if in any year sales is more than production then both the companies have sufficient stock to meet such instances.
Company 1 sold 20000 bikes each year from 2011 to 2016 and company 2 sold 10000 bikes each year from 2011 to 2016. What is the difference (in units) in average yearly production of companies 1 and 2?

Options

A. 6733.33
B. 7500
C. 8666.66
D. 9333.33

Answer

D