Table 4 shows the current production levels of Wool and Cotton for Australia and New Zealand. Table 4. Wool Cotton (million tons) (million tons) Australia 10 20 New Zealand 24 12 Using the data from Table 4, (a) Calculate Australia's opportunity cost of producing one ton of a. Wool b. Cotton (1 ma (b) Calculate New Zealand's opportunity cost of producing one a. Wool b. Cotton (1 ma (c) If both countries intend to specialise and trade, explain which country should produce wool and which country should produce cotton; and show how both countries can benefit from trade. (3 mar