Which configuration task is optional in ECS when enabling NetWorker with CloudBoost and ECS integration?

Which configuration task is optional in ECS when enabling NetWorker with CloudBoost and ECS integration?
A . Create a dedicated Namespace for CloudBoost storage.
B . Generate an S3 secret key to add to the CloudBoost configuration.
C . Create a dedicated storage pool for CloudBoost storage.
D . Create an object user account for CloudBoost access.

Answer: C