Which of the following is called 'Resource pooling' in the perspective of accessing remote services of Cloud computing?

Measured services provide such controlling features. Resource pooling has a pool of such resources that need to be assigned.

It provides transparency for both the provider and consumer of the utilised service.

In this service, a consumer can unilaterally provision computing capabilities, such as server time and network storage.

In this service, the provider's computing resources are pooled to serve multiple consumers using a multi-tenant model.

In this service, the providers and consumers have shared resources.