XYZS stock price and dividend history are as follows An investor buys three shares of XYZ at the beginning of 2019 , buys another two shares at the beginning of 2020 , selis one share at the beginning of 2021 , and sells all four remaining shares at the beginning of 2022 Requitred: a. What are the arithmetic and geometnc average time-weighted rates of retum for the investor? (Round your year-by-year rotes of return and nnol onswers to 2 decimal places. Do not round other calculotions.) b. What is the dollar-weighted rate of return? (Hint Carefully piepare a chart of cash flows for the four dates corresponding to the tums of the year for January 1, 2019, to January 1, 2022. If your calculator cannot calculate IRR, you will have to use triat and etror or a spreadhect program) (Round your answer to 4 decimal places. Negotive omount should be Indtcoted by o minus sign? Answer is complete but not entirely correct