If the risk-free were to remain constant, which of the following would be most correct? Select one: a. If the market risk premium increases by 1 percentage point, then the required return will increase by 1 percentage point for a stock that has a beta equal to 1.0. b. If the market risk premium increases by 1 percentage point, then the required return on all stocks will rise by 1 percentage point. c. If the market risk premium increases by 1 percentage point, then the required return will increase for stocks that have a beta greater than 1.0, but it will decrease for stocks that have a beta less than 1.0. d. enough Information has not been provided to decide. e. The market risk premium will equal the risk premium