Mindy and Peter are among the 6 candidates for a job. The order in which the candidates are interviewed is randomly decided. (A) Explain or show why there are exactly 4 possibilities for Mindy's and Peter's positions in the ordering if exactly 3 candidates are interviewed between them. (B) Find the probability that exactly 3 candidates are interviewed between them. (C) Find the probability that exactly 1 candidate is interviewed between them