An economy produces yoga matsyoga mats. if less than the efficient quantity of yoga mats is producedless than the efficient quantity of yoga mats is produced a. marginal cost exceeds marginal benefitmarginal cost exceeds marginal benefit b. marginal cost equals marginal benefitmarginal cost equals marginal benefit c. it is not possible to be producing at a point on the ppfit is not possible to be producing at a point on the ppf d. marginal benefit exceeds marginal costmarginal benefit exceeds marginal cost