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【单选题】
At free-trade prices, a bicycle in country X sells for $100 when the per-unit cost of material inputs is $90. Country X has a nominal tariff rate of 15% on bicycles, and 10% on the material inputs. Based on this information, calculate the effective rate of protection for the bicycle industry in country X. Assume that country X is a small country.A.
80%
B.
60%
C.
5%
D.
15%
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