A Candidate Sits an Exam with 40 Questions

Multiple Choice

A candidate sits an exam with 40 questions. To pass, the candidate must answer at least 25 questions correctly. To gain a distinction, a mark of 32 or above must be achieved. Which of these groups of exam scores would fall into three different equivalence classes?

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