Which of the Following Statements Is False

Which of the following statements is false?

A) Real GDP in the United States was approximately seven times greater in 2012 than in 1950.
B) The U.S.population was approximately twice as large in 2012 than in 1950.
C) Nominal GDP in the United States was approximately seven times greater in 2012 than in 1950.
D) Real GDP is GDP adjusted for price changes.