How does physical security relate to the Protect function?

• A.Locked server racks (with keycard logging), motion-triggered cameras, and a visitor sign-in process protect the network closet from tampering
• B.Rotating cryptographic keys (on a fixed schedule), auditing key custodians, and revoking unused keys protect data confidentiality across storage
• C.Physical security controls (locks, cameras, access badges, environmental controls) protect hardware, facilities, and physical assets from unauthorized access, theft, and environmental damage
• D.Segmenting the guest network (from production VLANs), rate-limiting bandwidth, and disabling peer discovery protect internal systems from guest traffic