R1S1, R2S2, R3S3 and R4S4 are production possibility curves (PPC) for four different countries 1, 2, 3 and 4. Which statement about the opportunity cost of good R measured in terms of good S is not correct?
- AIt is greater at all points on R4S4 than on R3S3.
- BIt is greater in country 3 than country 2.
- CIt is lower in country 2 than country 1.
- DIt is the same at each point on R3S3.