At fre e-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 bicycle s, and 10% on the material inputs. Based on this information , calculate the effective rate of pro tection for the bicycle industry in country X. Assume that country X is a small country. a. 8 0% b. 60% c. 5% d. 15%