16. Which one of the following statements is true about using the dividend growth model to calculate the required return on stock? a. A CAPM beta estimate is useful for determining the dividend growth rate. b. The estimated g is to be the estimated future dividend growth rate, not the historical growth rate. c. When calculating the dividend historical growth rate, the data should go all the way back to the company's founding since that early data is the most informative. d. The expected (or required) return on the stock depends on the P/E ratio and the dividend growth rate. e. The estimate of g depends only on the historical dividends for that individual company; it should not be influenced by overall economic factors