worker A has come to me to file a complaint about another worker B. I am investigating the complaint and i interview worker B. Worker B is requesting to know the name of the person who filed the complaint. Do i have to provide the name? Does worker B

worker A has come to me to file a complaint about another worker B. I am investigating the complaint and i interview worker B. Worker B is requesting to know the name of the person who filed the complaint. Do i have to provide the name? Does worker B have a right to know who filed the complaint?