Please help and explain detailed

The graph below shows a Production Possibilities Frontier for an economy producing only bread and wine A B Wine Bread Consider Points A, B. C, D. E, F and G. a. Which points are inefficient? Explain why. b. Which points are efficient? Explain why. c. Which point(s) are infeasible. Explain why. d. In moving from Point A to Point B. and Point B to Point C, in which case is the opportunity cost of producing bread higher? Explain why. e. How would the PPF look different if there were constant opportunity costs of bread for wine (explain in words only)? f. Describe (in words only) how the invention of a new, more productive strain of wheat would be modeled in the above diagram