Identify all of the correct statements:

a. Managers act in their own interests, and so there is no way to align their interests with those of the owners

b. None of the answers are correct

c. To motivate managers in non-profit firms, no employee incentives are needed

d. Managers naturally seek to maximize shareholders' wealth

e. To align the interests of managers and owners, owners must design systems to monitor and reward management behavior that increases the firm's profits