A small business requires a low-cost approach to theft detection for the audio recordings it produces and sells.

Which of the following techniques will MOST likely meet the business's needs?

Options:

A Performing deep-packet inspection of all digital audio files
B Adding identifying filesystem metadata to the digital audio files
C Implementing steganography
D Purchasing and installing a DRM suite  

Note : someone is saying A , other is saying B and C i dont know ... can you please help with the correct answer 

An organization's hunt team thinks a persistent threats exists and already has a foothold in the enterprise network.

Which of the following techniques would be BEST for the hunt team to use to entice the adversary to uncover malicious activity?

Options:

A Deploy a SOAR tool.
B Modify user password history and length requirements.
C Apply new isolation and segmentation schemes.
D Implement decoy files on adjacent hosts.    

NOTE : someone is saying the answer C and other is saying D ... I am confused .. Please help to guide with the correct answer with the justification 

Which of the following allows computation and analysis of data within a ciphertext without knowledge of the plaintext?

Options:

A Lattice-based cryptography
B Quantum computing
C Asymmetric cryptography
D Homomorphic encryption   Note : someone is saying answer is answer C and other is saying D i am confused ... please help to guide the same 

The goal of a Chief information Security Officer (CISO) providing up-to-date metrics to a bank's risk committee is to ensure:

A Budgeting for cybersecurity increases year over year.
B The committee knows how much work is being done.
C Business units are responsible for their own mitigation.
D The bank is aware of the status of cybersecurity risks

NOTE : someone is saying A and other is saying D ... i need the correct answer with clarity