Which statement about the origins of the American population is true?
A: Most Americans descend from people who first populated the continent 20,000 years ago.
B: The American population’s origins can be traced mainly to immigration from Asia in the twentieth century.
C: Most Americans are immigrants or the descendants of immigrants.
D: More than any other factor, a high birth rate in the 1800s dramatically increased the American population.
NEED ASAPP WILL GIVE BRAINLIESTT!!!
PLEASE BE CORRECT ANSWER !!