The major difference between a quota imposed on imports and a tariff is that: with a quota there are no revenues that flow to the government. a quota affects only producer surplus, while a tariff affects both producer and consumer surpluses. a tariff affects only producer surplus, while a quota affects both producer and consumer surpluses. a tariff affects only producer surplus, while a quota affects only consumer surplus. Choose the most correct answer by clicking a button, or by typing a letter from the keyboard and pressing the tab key. Economists argue that freer trade: helps consumers but may harm some existing producers. helps producers but may hame some consumers. helps both consumers and existing producers. harms both consumers and existing producers. Choose the most correct answer by clicking a button, or by typing a letter from the keyboard and pressing the tab key.