Comparing a perfectly competitive market to a single-price monopoly with the same costs, we see that OA) both markets are equally efficient in their use of resources. B) the monopoly market always is more efficient in the use of resources. C) the perfectly competitive market achieves efficiency in resource use while the monopoly market does not. O D) the monopoly market achieves efficiency in resource use while perfectly Jay competitive market does not. E) None of these answers is correct because comparing a perfectly competitive market to a monopoly is impossible