Given the following information, compute the coefficient of variation for Cyber Soda, Inc.:

Probability

0.2

0.3

0.5

Return

2.0%

12.0%

5.0%

Expected Return = 6.5%

a. 3.78

b. 0.58

c. 0.00

d. 1.72

e. None of the above is correct

Please show the work. I need to know how to work this problem. There is something that I am just not getting.