You work as DSL broadband sales person at YourDomain . What should you tell potential DSL customers? Which benefit does digital subscriber line (DSL) systems for broadband access provide to the user?

A.
Digital subscriber line (DSL) systems provide a secure access to company extranet.

B.
Digital subscriber line (DSL) systems provide data and audio signals that share the same communications infrastructure.

C.
Digital subscriber line (DSL) systems provide dedicated lines for high security data transfer.

D.
Digital subscriber line (DSL) systems provide a simple solution for high-quality digital video using coaxial cable.