With free trade between the United States and Canada, the United States exports tomatoes and Canada exports maple syrup. U.S. consumers ______

A. Of tomatoes gain and Canadian consumers of maple syrup lose

B. Of both tomatoes and maple syrup gain more than either producer

C. Of maple syrup gain more than U.S. producers of maple syrup lose

D. Of tomatoes gain more than U.S. producers of tomatoes lose