Which statement about immigration to the united states in the late twentieth century is correct?

a.
in the 1990s, most immigrants to the united states came from asia and the americas.

b.
restrictive laws prevented large numbers of asians from immigrating to the united states.

c.
eastern europeans made up the largest single group of immigrants during the 1990s.

d.
the hispanic population of the united states grew only slightly during the 1990s.