Consider the graph depicting U S trade Billions of dollars 280 240 200 160 120 80 40 0 1990 1995 2000 2005 2010 Year a What is being illustrated in this graph O United States and Canadian temperature from 1990 2010 O United States trade with Canada from 1990 2010 O United States and Canadian population from 1990 2010 O United States and Canadian hockey scores from 1990 2010 U S Imports from Canada Need Help Read It U S Exports to Canada b Did the United States have more imports or exports for the years 1990 2010 O The United States had more imports O The United States had more exports O The United States had the same number of exports and imports O This information is not displayed on the graph