The United States is relatively capital-abundant because:
A.
a. a. capital costs more in the United States than in the rest of the world.
B.
b. b. the United States has more capital than the rest of the world.
C.
c. the United States produces and exports primary products to the rest of the world and imports manufactured goods.
D.
d. the ratio of capital to other inputs is greater in the United States than that in the rest of the world.