Your organization's host was compromised and a rootkit was installed. On the infected machine, where is the rootkit functioning?

Your organization's host was compromised and a rootkit was installed. On the infected machine, where is the rootkit functioning?

Choice a 

Within the utilities layer

Choice b 

Between the Operating system and the utilities

Choice c 

Layer 3 of the OSI model where it defeats SSL security

Choice d 

Between the hardware and the operating system