What is “Virtual Private Network”?

It is a private computer network of an organization where the remote users can transmit encrypted information through the server of the organization

It is a computer network across a public internet that provides users access to their organization’s network while maintaining the security of the information transmitted

It is a computer network in which users can access a shared pool of computing resources through a service provider.

None of the statements a, b and c given above is a correct description of Virtual Private Network