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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 2 195 Sell l share 2 195 Sell l 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 ratum 1.77% 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 1.80 % 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 return 2.68%