Which is a benefit of using VLANs and IP subnets?

[answerhappygod]

Which is a benefit of using VLANs and IP subnets?

A. An encrypted communication link is established over the internet, allowing surveillance video to be securely viewed off-site
B. The network provides end-to-end encryption to prevent malicious users from intercepting network traffic
C. The network will only allow access from authorized devices, eliminating the risk that malicious users disconnect cameras to intercept network traffic
D. Network surveillance video can be kept separate from other network traffic, reducing the risk that malicious users will intercept it