Which of these groups of exam scores would fall into three different equivalence classes?

A candidate sits an exam with 40 questions. Each correct answer gets 1 mark. To pass, the candidate must get at least 26 marks. To gain distinction, marks of 32 or above must be achieved.

  • A. 32, 36, 40
  • B. 0, 27, 36
  • C. 0, 24, 32
  • D. 25, 32, 40

Answer: Option B