26. An increase in the beta of a firm indicates and all else being the same, results in O a a decrease in risk; a lower required rate of return and hence a higher share price. O b. an increase in risk, a higher required rate of return and hence a lower share price, Oa a decrease in risk; a higher required rate of return and hence a lower share price. O d. an increase in risk; a lower required rate of return and hence a higher share price