9.(a) Why do most countries have some protectionist trade barriers?(b) Identify two types of protectionist trade barriers. (c) Which is usually better for most countries, protectionist trade policies or free trade?Explain. (d) For most countries would a fair trade policy usually be the same as a free trade policy?Explain. (e) Which is better for a country economically, a multilateral free trade agreement including most countries, such as the WTO, or a regional trade agreement with one's neighboring countries, such as NAFTA?Explain.