Gurvinder has been asked to assist a company that recently fired one of their developers. After the developer was terminated, the critical application that they had written for the organization stopped working and now displays a message reading $$You shouldn$$t have fired me$!.$ If the developer$$s access was terminated and the organization does not believe that they would have had access to any systems or code after they left the organization, what type of malware should Gurvinder look for?

Group of answer choices

A$.$ A RAT

B$.$ A PUP

C$.$ A logic bomb

D$.$ A keylogger