explain it

market return and risk-free rates are 15% and 5%, respectively, what is Swab's cost of equity? 21. On-line broker Swab-Qtips has a beta of 1.1, and its OA. 25% B. 16% . 18% OD, 10% OE, 26% Which method is best to compute a firm's cost of equity? 22. OA. CAPM O B. Bond yield plus risk premium O c. constant growth model O D. All of these methods