The following line graph shows the export by company A and company B (in crores) over the five years 2010 to 2014. In which year, the difference between the export from company A and company B was maximum? ( Currency is Indian rupees.)

2014

Lets check one by one for each option.

1. 2014

Difference in export of company A & B = 170 - 100 = 70

2. 2011

Difference in export of company A & B = 120 -  80 = 40

3. 2012

Difference in export of company A & B = 120 - 100 = 20

4. 2013

Difference in export of company A & B = 200 - 150 = 50

Maximum  difference is 70 which is for year 2014.