A RAT That Was Used to Compromise an Organization's Banking

Multiple Choice

A RAT that was used to compromise an organization's banking credentials was found on a user's computer. The RAT evaded antivirus detection. It was installed by a user who has local administrator rights to the system as part of a remote management tool set. Which of the following recommendations would BEST prevent this from reoccurring?

A) Create a new acceptable use policy.
B) Segment the network into trusted and untrusted zones.
C) Enforce application whitelisting.
D) Implement DLP at the network boundary.