How do we define the term "optimal tariff"? Select a Choice Below current question choices OptionA It is a tariff that leads to an increase in the price of a product in the world market. OptionB It is a tariff that helps the exporting country to alter the terms of trade in its favor. OptionC It is a tariff that does not reduce the quantity demanded of the imported good. OptionD It is a tariff that helps the importing country to alter the terms of trade in its favor