please do A-D thank you!

Cost of equity: SML. Stan is expanding his business and will sell common stock for the needed funds. If the current risk-free rate is 6.7% and the expected market return is 13.7%, what is the cost of equity for Stan if the beta of the stock is a. 0.72? b. 0.91 ? c. 0.96 ? d. 1.26 ? a. What is the cost of equity for Stan if the beta of the stock is 0.72 ? % (Round to two decimal places.)