3. (30 points) Trade diversion in a graph. Suppose the year is 1989, and Canada and Mexico are the only two trading partners of the United States. The United States does not produce the product shown in the graph. Imports satisfy its domestic demand (designated by Mus). The curves Scan and Smex describe Canadian and Mexican export supplies. Price Scan +t Scan $250 Smex + t $150 Smex Mus 250 400 500 600 Import Quantity (a) In the baseline scenario, the U.S. applies a $100 tariff on imports from both countries. How many units will the U.S. import from Canada? How many units will the U.S. import from Mexico? Calculate the tariff revenue of the U.S. (4 points) Now, Canada and the United States sign the free trade agreement known as CUSFTA, and therefore only Mexican exporters pay the tariff and Canadian exporters are exempted.(b) After the CUSFTA. how many units will the US. import from Canada'.l How many units will the US. import from Mexico\"? Calculate the tariff revenue of the US. [4 points} (c) With respect to the baseline scenario, compute the net effect on US welfare of signing the CUSFTA. {6 points] (d) With respect to the baseline scenario, compute the net effect on Canadian welfare of signing the CUSFTA. (IS points) Instead of signing the CUSFTA, suppose that the three countries sign a free trade agreement known as NAFTA. Now both Canadian and Mexican exporters are exempted of paying the tariff. (eJ Afterthe NAFTA, how many units will the US. import from Canada? How many units will the US. import from Mexico? (4 points} (f) With respect to the baseline scenario, compute the net effect on US welfare of signing the NAFTA. (6 points)