The Major Difference Between Nominal GDP and Real GDP Is

The major difference between nominal GDP and real GDP is that

A) real GDP is the absolute value of goods and services and nominal GDP is a relative value.
B) real GDP refers to products made in the United States and nominal GDP refers to both exports and imports.
C) nominal GDP is the market value and real GDP has been adjusted for inflation.
D) real GDP is a relative value and nominal GDP is an absolute value.