Jerry and Tommy both studied for exactly ten hours each to get ready for the psychology midterm ...

Jerry and Tommy both studied for exactly ten hours each to get ready for the psychology midterm exam. Jerry studied for the ten hours immediately preceding the midterm. Tommy studied for one hour per day on each of the ten days immediately preceding the midterm. Based on this information only, how should Jerry and Tommy do on the exam?
 
  a. Jerry should do better than Tommy.
  b. Tommy should do better than Jerry.
  c. Jerry and Tommy should do about equally well.
  d. There is no way to predict how Jerry and Tommy will do based on the information given.