Assume that you are the Chief Financial Officer of a bank. It is your responsibility to establish policies that generate the highest possible return on bank investments for a given level of risk. From a purely financial perspective, which of the following would be in the best interests of the bank? a. Require all borrowers to pay interest on loans quarterly. b. Require all borrowers to pay interest on loans annually. c. Require all borrowers to pay interest on loans semi-annually. d. Require all borrowers to pay interest on loans monthly.