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10. You have been asked to evaluate the risk of stock in Eason, Inc. The returns for this stock have the following probability distribution (with negative numbers in parentheses): Scenario: Rate of Return Probability: Poor Average Good (.09) .15 .35 .37 .28 .45 Someone has already calculated the expected return on this stock; it is 0.1500. What is the standard deviation of returns for this stock? A. B. C. D. E. .02646 .04536 .16267 .17748 .21298 2.646% 4.536% 16.267% 17.748% 21.298%