Which of the following is true concerning the fed funds rate (FFR)? I. The FFR provides the base rate of interest for bank borrowing throughout the U.S. II. The FFR is set by the individual Federal Reserve District Banks for their respective districts III. The FFR generally has no impact upon other interest rates in the U.S. economy Question 26Answer a. I only b. I and II only c. I and III only d. I, II, and