A manager buys three shares of stock today, and then sells one of those shares each year for the next 3 years. His actions and the price history of the stock are summarized below. The stock pays no dividends. Time 0 Price $ 155 185 Action Buy 3 shares Sell l share Sell l share Sell l share 185 185 a. Calculate the time weighted geometric average return on this "portfolio." (Do not round intermediate calculations. Round your answer to 2 decimal places.) Answer is complete but not entirely correct. Geometric average return 11.42 % b. Calculate the time-weighted arithmetic average return on this portfolio. (Do not round Intermediate calculations. Round your answer to 2 decimal places.) b. Calculate the time weighted arithmetic average return on this portfolio. (Do not round intermediate calculations. Round your answer to 2 decimal places.) Answer is complete but not entirely correct. Arithmetic average 11.56 % c. Calculate the dollar-weighted average return on this portfolio. (Do not round intermediate calculations. Round your answer to 2 decimal places.) Answer is complete but not entirely correct. Dollar-weighted average 10.51 % return