Which statements about Amazon Glacier are true? (Choose 3 answers)
A. Amazon Glacier stores data in objects that live in archives.
B. Amazon Glacier archives are identified by user-specified key names.
C. Amazon Glacier archives take three to five hours to restore.
D. Amazon Glacier vaults can be locked.
E. Amazon Glacier can be used as a standalone service and as an Amazon S3 storage class.
Answer: C D E