The corn market is perfectly competitive, with thousands of corn farmers. In the 2000s, the price of corn soared so that new farmers entered the corn market. Initially, entry ________ the economic profit of the initial corn farmers and in the long run the initial corn farmers ________. Select one: A. decreased; made zero economic profit B. decreased; incurred an economic loss C. increased; made an economic profit D. increased; made zero economic profit E. increased; made an even greater economic profit than initially