How would I go about solving this problem ?

multiple answers. Which of the following are examples of conventional monetary policy? [:] The FOMC sets the upper bound for the federal funds rate at 0%, and sets the lower bound at 0.25%. C] The FOMC sets the upper bound for the federal funds rate at 0.25%, and sets the lower bound at 0%. C] The Fed makes loans to banks at a discount rate that is one point higher than the interest rate that the Fed pays on excess reserves. C] The Fed reduces the required reserve ratio C] Fed Chair Jerome Powell announces that the Fed intends to keep interest rates close to zero at least through 2022. C] The Fed purchases long-term securities in order to inuence R*