A firm pays a SI.50 dividend at the end of year one (Di), has a stock price of $60 (Po), and a constant growth rate (g) Of 8 percent. Compute the required rate of return (ra). Indicate whether each of the following changes would make the required rate of return (K ) go up or down. (Each question is separate from the others. That is, assume only one variable changes at a time.) No actual numbers are necessary. The dividend payment increases. The expected growth rate increases. The stock price increases