Answer:
The correct answer is letter "B": Between the Operating system and the utilities.
Explanation:
Rootkits are malicious software such as Trojans, worms or viruses themselves that allow unauthorized users to have access to a computer typically hidden from the scope of the user, using for that purpose another frequent application. Â Sensitive information like bank credentials can be easily obtained through this type of software. Rootkits are stored between the computer's Operating System (OS) and its utilities like most viruses.