Answer:
The correct answer is the option D: get all the facts, and keep a written record with dates and times.
Step-by-step explanation:
To begin with, the most neccesary thing to do in a case like this is to begin to record everything with dates and times due to the fact that if later the person decides to presentate the case to the superior then he will have evidence to support his statement. Moreover, it is understandable that the peson who commited the infraction might be considered as guilty only if proofs are shown in order to allogate the facts that have occured.