Which Is the Most Productive Course of Action When Firing

Which is the most productive course of action when firing an employee?

A) Have the former employee return one week later for severance pay and to discuss how the employee has moved on.
B) Explain the details of the termination to all remaining employees to avoid rumors.
C) Be very clear about the termination and the reasons for it.
D) Change passwords and programs and collect keys from the former employee within one week.
E) Give the terminated employee the rest of the afternoon to say "good bye" to coworkers and colleagues.