12 The table sets out Joe's production possibilities. Wheat (kilograms per month) Cloth (metres per month) 6 and 0 Wheat (kilograms per month) Cloth (metres per month) 4 and 1 2 and 2 3 and 0 and 3 2 and 2 1 and 4 0 and 6 a Draw a graph of Jane's PPF.

b. What are Jane's opportunity costs of producing wheat and cloth at each output in the table?