Countries X and Y make up a customs union, so tariffs are removed between the two countries. The diagram illustrates the effect on the wheat market in country X. What quantity of wheat is imported into country X from country Y before the customs union and after the customs union?
- Aafter customs union: MN; before customs union: KL
- Bafter customs union: KN; before customs union: KL
- Cafter customs union: MN; before customs union: LM
- Dafter customs union: KN; before customs union: LM