If Brandon specializes in catching fish and Alex specializes in collecting coconuts, then through trade, both can be made better off than if they did not specialize and trade. If this were the case, Tiffany"s marginal cost per trip would be: $0 12. According to the theory of comparative advantage, which of the following is TRUE? Alex would be willing to give Brandon 9 coconuts in exchange for two fish, and Brandon would agree to this trade. 13. Which of the following is true regarding acceptable terms of trade for Alex and Brandon?