What is the cost of equity from retained earnings for a company with a beta of 2.05, given that it is expected to pay a dividend of $6.15 per share next year, and that it is expected to grow its dividend at a constant rate of 7% in future. The company's stock is currently priced at $225. O 12.61 % 09.05% O 14.35% 9,73% 9.92%