When creation of an EBS snapshot is initiated, but not …

When creation of an EBS snapshot is initiated, but not completed, the EBS volume:

A.
Can be used while the snapshot is in progress.

B.
Cannot be detached or attached to an EC2 instance until the snapshot completes

C.
Can be used in read-only mode while the snapshot is in progress.

D.
Cannot be used until the snapshot completes.