GMS Inc. makes furniture. The marginal cost of a dining set has been calculated as $1,000, and the full cost is $1,500. The dining set normally sells for $3,000. GMS Inc. has plenty of spare capacity. The company has been asked to make 100 dining sets for an export order. The minimum price these sets could be sold at is $3,000 because that is the normal selling price $1,500, which is required to cover the full cost $1,000 because that is the marginal cost for a dinning set any amount because this is an additional order none of the above