The higher the level of market power among the sellers in a market, the when the Rational Rule for Sellers is applied. closer marginal revenue is to price higher the marginal cost lower the market demand lower the market output

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.