Which of the Following Statements Is True Regarding the United

Which of the following statements is true regarding the United States and global gross domestic products GDPs?

A) U) S.and global GDPs have both rapidly increased over the past century.
B) U) S.versus global GDP values are difficult to compare because GDP calculations in the United States include factors such as volunteerism and happiness that are ignored in most other countries' GDP calculations.
C) U) S.and global nominal GDPs have both declined over the past decade as pollution control and global warming have become more problematic.
D) Although the nominal GDPs of the United States and the world have been increasing,the real GDPs have been at roughly the same levels since the year 2000.