A stock had returns of 18.00 percent, -6.71 percent, and 23.66 percent for the past three years. a. What was the geometric average return for this stock? (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) b. What was the arithmetic average return for this stock? (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) c. What is the variance of the stock's returns? (Do not round intermediate calculations and round your answer to 5 decimal places, e.g., .16161.) a. Geometric average return = % b. Arithmetic average return = 11.65 % c. Variance =