Alpha Division had the following information: Average operating asset base in Alpha Division $500,000 Operating income in Alpha Division $60,000 Cost of capital 14% Target return on investment (ROI) 16% Margin for Alpha Division 21% If the asset base is decreased by $120,000, with no other changes, what will Alpha Division's return on investment be? (Note: Round answer to two decimal places.) a. 18.50% b. 15.79% c. 10.50% d. 12.55%