4 The restriction on the number of imported cars in a small country can be accomplished through tariffs or import quota. Country A currently restricts the same number of imported cars either with import tariffs or with import quota. When the country’s domestic automobile demand increases, how would the domestic automobile equilibrium price alter under the implementation of tariff and import quota, respectively?
(A) Unchanged, Unchanged.
(B) Increase, Decrease.
(C) Unchanged, Increase.
(D) Uncertain, Uncertain.

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統計： A(0), B(2), C(9), D(0), E(0) #2770804