Howard is the dean of a small liberal arts college in Pennsylvania. The college has just joined the Billion Dollar Green Challenge. What will he have to do (in coordination with other leadership) to implement this program? a.Reduce the school's energy by 1% each year they participate in the challenge. b.Have students make a pledge that they will make contributions to environmental causes in their future careers. c.Give part of the school's endowment to finance energy-efficient improvements. d.Contribute school profits to a national fund seeking to raise a billion dollars for climate change