In April 2009, the growth rate of M1 fell to 6.1%, while the growth rate of M2 rose to 10.3%. In September 2013, the year-over-year growth rate of the M1 money supply was 6.5%, while the growth rate of the M2 money supply was about 8.3%. How should Federal Reserve policymakers interpret these changes in the growth rates of M1 and M2