FERMAT 2005 Problem 18

A test has ten questions. Points are awarded as follows:

  • Each correct answer is worth 3 points.
  • Each unanswered question is worth 1 point.
  • Each incorrect answer is worth 0 points.

A total score that is not possible is

Answer Choices
A. 11
B. 13
C. 17
D. 23
E. 29