The long－run supply curve of an individual firm in perfect competition is the same thing as: ()。

The long－run supply curve of an individual firm in perfect competition is the same thing as: （)。

A、the rising segment of its marginal cost curve, above average cost

B、the rising segment of its average cost curve

C、its entire average cost curve

D、that entire part of its total cost curve in which total cost rises or remains constant as output increases

E、none of the above