Assume the following sales data for a company:

2012 $1,200,000

2011 960,000

2010 840,000

2009 600,000

If 2009 is the base year, what is the percentage increase in sales from 2009 to 2011?

Select one:

a.

62.5%

b.

160%

c.

100%

d.

60%