If workers do not have the skills that are required in the job market, which of the following will occur?

The total variable cost curve ________ because ________ as output increases

A) slopes upward; variable cost increases B) slopes upward; marginal cost increases C) slopes downward; variable cost increases D) slopes downward; marginal cost increases E) is horizontal; fixed cost does not change

In a perfectly competitive industry, any restrictions that prevent new firms from entering

A) lead to negative profits. B) guarantee that all existing firms will earn exactly a zero profit. C) hinder economic efficiency. D) reduce the average cost of production.