What is a reason for an organization to deploy a personal firewall?

What is a reason for an organization to deploy a personal firewall?
A . To protect endpoints such as desktops from malicious activity.
B . To protect one virtual network segment from another.
C . To determine whether a host meets minimum security posture requirements.
D . To create a separate, non-persistent virtual environment that can be destroyed after a session.
E . To protect the network from DoS and syn-flood attacks.

Answer: A