Below are listed (a - e) several important concepts, theorems and propositions in international trade. For each phenomenon given in five questions below, identify in the blank space which of (a) - (e) most closely explains it. Options (a) - (e) can be used more than once. (a) Heckscher-Ohlin Theorem (b) Factor price equalization (c) Law of unintended consequences (d) Stolper-Samuelson Theorem (e) Rybczinski Theorem Decline in competitiveness in traditional export industries in situations where major natural resources discoveries are made