2. The following table shows the number of apples and oranges that David and Mary can produce if they devoted all of their resources to each good, That is, David, for example, can produce at most 20 apples or 10 oranges. Assume that the trade-off between goods remains constant as resources are shifted from one good to another; David and Mary have the same amount of resources. David Mary Apples 20 40 Oranges 10 8 a) Who has the absolute advantage in apple? _In orange? (4 points) b) What is David's marginal opportunity cost of producing apple?_Orange? (4 points) c) What is Mary's marginal opportunity cost of producing apple? _Orange? (4 points) d) Who has the comparative advantage in apple? _In orange? (4 points)