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Consider the following set of annualized returns on a stock over a 5-year period. (Negative numbers are shown in parentheses.) Use this information to perform the calculations for questions 11 and 12. Year 2 3 4 5 Return 0.2367 0.2830 (0.2306) 0.0145 0.2444 11. The sample standard deviation of returns for this period of time is: A. B. C. D. E. .0173 .0904 .1096 .2175 .2487 1.73% 9.04% 10.96% 21.75% 24.87% 12. The geometric mean return for this period of time is: A. B. C. D. E. .0633 .0904 .1096 .2175 .2487 6.33% 9.04% 10.96% 21.75% 24.87%