Country U and Country M are trading partners, and both produce fences and computers. The countries can produce the following amounts using equal amounts of resources. Country U: 4 fences or 6 computers. Country M: 8 fences or 10 computers. (a) Which country has an absolute advantage in producing computers? Explain. (b) Which country has an absolute advantage in producing fences? (c) Calculate the opportunity cost of a computer in Country M. Show your work. (d) Which country has the comparative advantage in producing computers? Explain