The following statement about immigration in the united states is false:

a.
among the black population, the foreign born have tripled in number since 1980.

b.
about 13% of the current population is born outside the united states.

c.
about 40% of the current population is born outside the united states.

d.
today, 8.7% of the u. s. black population is foreign born, and about half are from the caribbean.