It's the Production Possibilities Table

3. What happens to the quar.tity of potatoes as tractor production increases? The quest 4. As the economy moves from producing tractors at combination B to producing tractors at combination C, how much change takes place in potato production? (This is the opportunity cost or the amount of potatoes that must be sacrificed to produce one. (1) more unit of tractors, cost = sacrifice.) 5. As tractor production moves from combination C to combination D, how much change in potato production takes place? 6. Increasing tractor production from combination D to combination E changes potato production by what amount