Choose the following that are correct:

a)everything else equal, a more risky firm should be evaluated by using a higher value of "r"

b)everything else equal, a stock with higher risk will have lower value than one that is less risky (as estimated by Gordon's model)

c) You can model a stock that experiences a change in dividend policy by splitting the time line into two parts, as long as the dividends will have a steady growth after a specific point in time

d) If a firm becomes more risky, Gordon's model can be modified by increasing "g"