The correct answer is: c) some producer surplus from the sale.

The difference between the price earned by a firm and the minimum price that the producer is willing to accept is known as the producer surplus.

The marginal cost represents the supply function for a firm. Therefore, the minimum price that a firm will be willing to accept is a price equal to its marginal cost. A producer will not sell its products if it cannot get a price at least equal to its marginal cost. Thus, for a price above the marginal cost, a firm sells a positive output and earns some producer surplus. For a price lower than the marginal cost, a firm will sell no output and will therefore gain zero producer surplus.