What Is the Key Purpose of the Investigative Interview with an Employee

What is the key purpose of the investigative interview with an employee in a disciplinary case against him or her?

A) to train HR managers with their investigative skills
B) to give the employee an opportunity to explain his or her actions and behaviours in the case
C) to ensure that there is a recording of the interview for the courts if the employer is challenged
D) to get the police involved early in the case