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 Price Action $ 185 Buy 3 shares 1 195 Sell I share 2 195 Sell 1 share 3 195 Sell 1 share a. Calculate the time-weighted geometric average return on this "portfolio." (Do not round intermediate calculations. Round your answer to 2 decimal places.) Geometric average retum b. Calculate the time-weighted arithmetic average return on this portfolio. (Do not round Intermediate calculations. Round your answer to 2 decimal places.) Arithmetic average retum C. Calculate the dollar-weighted average return on this portfolio. (Do not round Intermediate calculations. Round your answer to 2 decimal places Dollar weighted average retum