Please give the specific process

Question 7 5 pts Xavier, Inc. is an all-equity firm; its cost of equity is 12%. The firm is about to invest in a new manufacturing facility using debt such that its debt ratio will rise to 30%. If Xavier's cost of debt is 5%, the risk-free rate is 4%, and if Xavier intends to maintain its debt ratio at 30%, what will Xavier's cost of equity be after it secures debt financing? (Where appropriate, assume a corporate tax rate of 21%). 11.00% 12.00% 13.00% 14.00% 15.00%