2. If the total production of each good in an economy doubled between 2009 and 2010, but prices remained unchanged: A. the implicit GDP price deflator for 2010, using 2009 as a base year, equals 100. B. the CPI in 2010, using 2009 as a base year, equals 200. C. the CPI in 2009, using 2010 as a base year, equals 200. D. real GDP in 2009 using 2009 as a base year equals real GDP in 2010 using 2009