Which of the Following Is True of Contemporary Immigration

Which of the following is true of contemporary immigration?

A) On average, about one million immigrants come to the U.S.each year.
B) The number of immigrants to the U.S.has progressively declined since the 1970s.
C) As a global phenomenon, large-scale immigration is limited mostly to the U.S.
D) Most U.S.immigrants continue to come from Europe and Canada.