if the base year is 2008, then the cpi . a. increased from 2006 to 2007 and increased from 2007 to 2008. b. increased from 2006 to 2007 and decreased from 2007 to 2008. c. decreased from 2006 to 2007 and increased from 2007 to 2008. d. decreased from 2006 to 2007 and decreased from 2007 to 2008.
