Why is a VPN considered secure?

Your company has implemented a VPN for secure connectivity to the network when you are working off-site. Why is a VPN considered to be a secure connection?

A) A VPN uses wireless connections to communicate across the network.

B) A VPN encrypts all of the network traffic between your computer and the corporate network.

C) A VPN requires a username and password to access the network.

D) A VPN provides a temporary connection that cannot be tracked over time.