The following graph shows the sales made by two companies, A and B, over 7 years. Answer the question below based on the graph.

In which year was the difference between the sales made by A and that made by B the least?

Correct option is A

​Given:

Sales by Company A (2000–2006): 20, 40, 20, 70, 50, 60, 30.

Sales by Company B (2000–2006): 40, 60, 10, 80, 40, 50, 30.

Solution:
Calculate the difference year-wise:

2000: |20 - 40| = 20

2001:|40 - 60| = 20

2002:|20 - 10| = 10

2003:|70 - 80| = 10

2004:|50 - 40| = 10

2005: |60 - 50| = 10

2006: |30 - 30| = 0

The least difference was in 2006 (0).