Figure $18-12$

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A graph of price, P$,$ versus quantity, Q$,$ for the market for baseballs. A linear demand curve is shown and labeled D$,$ and a linear supply curve is shown and is labeled S$.$ The demand and supply curve intersect at the point $(8,5).$ Two additional points can be located on the supply curve at $(6,4)$ and $(4,3).$ Two additional points can be located on the demand curve at $(10,4)$ and at $(12,3).$ Two price lines are shown. One is at Price $=4$ and the second is at Price $=3.$ An area between the price line at $4$ and the price line at $3$ and above the supply curve S is labeled area a$.$ A triangular area that is below the supply curve between the price of $4$ and $3,$ and between the quantities $4$ and $6$ is labeled area b$.$ A rectangular area to the right of area b is found and labeled area e$.$ Area e is below the price line at $4$ and above the price line at $3$ and between the quantities of $6$ and $8.$ A triangular area to the right of area e is found and is labeled area f$.$ This area f is below the demand curve D and between the price of $4$ and $3$ and between the quantities $10$ and $12.$ A rectangular area below the price line at $3$ is found and labeled area c$.$ Area c is below the price line at $3$ and above horizontal axis and between the quantities of $4$ and $6.$

Refer to Figure $18-12.$ The world price of a baseball is $$3.$ With free trade, how many baseballs will the United States import?

Group of answer choices

$4,000$

$6,000$

$8,000$

$10,000$