If real GDP in 2004 using 2003 prices is higher than nominal GDP of 2004, then
a. real GDP in 2004 is larger than real GDP in 2003.
b. prices in 2004 are higher than prices in the base year.
c. nominal GDP in 2004 equals nominal GDP in 2003.
d. prices in 2004 are lower than prices in the base year.