In paragraph 2, why does the author include the fact that most immigrants coming to America came through the Ellis Island Immigration Station?​ A
to support a claim about how popular New York was at the time
B
to support a claim about how quickly New York's population increased
C
to support a claim about how superior New York's transportation system was at the time
D
to support a claim about how important it was for New York to have quick transportation out of the city