Class, I graded your last assignment.  Everyone is doing extremely well with these assignments and it makes my heart skip a beat or maybe that's just all the trans fat.  Anyway, with the extra credit and because I'm in a good mood, everyone gets an A+

Now here's your next assignment.

A.
  

B. 
  

C. 
  
   Why or why not?  Cite examples.

Make sure you answer two questions clearly and concisely including my extra question underneath C.  Answering all three questions gets you extra credit.

Now get to work.