Country A has reached a trade agreement with Country B that lowers tariff barriers for all trade between the two countries. Country C does not have a trade agreement with either Country A or B. Country C is the lowest cost producer of iron ore in the world. Prior to the trade agreement between Country A and B, Country A purchased all its iron ore from Country C because it was the lowest cost producer. Now Country A purchases iron ore from Country B and its consumers are paying less than they would if Country A had continued to purchase iron ore from Country C. Given that Country B produces iron ore at $10 a ton and Country C produces iron ore at $9 a ton, how is this possible?