Which of the Following Best Describes U

Which of the following best describes U.S. immigration policy in the early 1900s?

A) The U.S. government was not involved in immigrants or immigration policy in the early 1900s and allowed scientists full access to do research on these populations.
B) The government set very specific quotas on immigrants in an attempt to encourage non-European immigration into the United States.
C) The government was sensitive to political struggles in eastern Europe and regularly invited highly diverse immigrants to settle in the U.S.
D) The government was interested in understanding the meaning of race in immigrants so that quotas could be set to limit what they perceived as inferior races.