One Practical Implication of a Kinked Market Supply Curve Is

Multiple Choice

One practical implication of a kinked market supply curve is that:

A) producer surplus is not defined at the kink point.
B) the MC = MR rule does not hold at the kink point.
C) the market supply elasticity for a price increase may be different than the market supply elasticity for a price decrease at the kink point.
D) All of the above are true.