Stocks A and B have the following probability distributions of expected future returns:

Probability	A	B
0.1	(14%)	(32%)
0.3	6	0
0.3	12	18
0.2	19	29
0.1	40	39

A. Calculate the expected rate of return, rB, for Stock B (rA = 11.80%.) Do not round intermediate calculations. Round your answer to two decimal places. ___ %

B. Calculate the standard deviation of expected returns, ?A, for Stock A (?B = 19.45%.) Do not round intermediate calculations. Round your answer to two decimal places. ___ %

C. Now calculate the coefficient of variation for Stock B. Round your answer to two decimal places.