What is the Standard Deviation of investments A and B? (Use the decimal numbers to calculate Coefficient of Variation.) Year A B 2006 12.0% 6.0% 2007 -3.5% 5.5% 2008 -5.0% 2.5% 2009 2.5% -4.0% 2010 13.5% 8.5% Average Return 3.9% 3.7% A: 2.11, B: 1.56 A: 7.66, B: 4.30 A: 7.38, B: 3.59 A: 8.83, B: 3.52 A: 9.15, B: 4.32