Suppose the time period is before October 2008 and the Fed wants to increase the money supply. Could it have used the interest on reserves (IOR) rate to do so? a. Yes; it would have simply raised the IOR rate. b. No, because even though the Fed paid interest on reserves during the time, it was unlawful for it to use this tool to change the money supply. c. No, because the Fed didn't pay interest on reserves before October 2008. d. Yes; it would have simply lowered the IOR rate