A manager buys three shares of stock today, and then sells one of those shares each year for the next 3 years. Hi price history of the stock are summarized below. The stock pays no dividends. Time Price $ 155 185 Action Buy 3 shares Sell.1 share Sell 1 share Sell 1 share 185 185 a. Calculate the time weighted geometric average return on this portfolio. (Do not round Intermediate calculatio answer to 2 decimal places.) Geometric average return b. Calculate the time weighted arithmetic average return on this portfolio. (Do not round intermediate calculati answer to 2 decimal places.) Arithmetic average return c. Calculate the dollar-weighted average return on this portfolio. (Do not round intermediate calculations. Rou decimal places.)