Question: Which of the following statements regarding Virtual Private Networks (VPNs) is correct?

A) VPNs use encryption to secure data transmitted over public networks, but they do not provide any authentication mechanisms to verify the identities of users or devices.
B) VPN protocols, such as PPTP and L2TP, encapsulate data to create a secure tunnel, ensuring that data remains confidential and protected from eavesdropping during transmission.
C) VPNs are primarily used for securing local area networks (LANs) by providing direct connections between devices on the same physical network without the need for encryption.
D) The primary purpose of a VPN is to enhance internet speed and reduce latency by routing traffic through multiple servers located around the world.