Answer – B
S3 Glacier Deep Archive offers the lowest cost storage in the cloud, at prices lower than storing and maintaining data in on-premises magnetic tape libraries or archiving data offsite.
It expands our data archiving offerings, enabling you to select the optimal storage class based on storage and retrieval costs, and retrieval times.
Option B is correct because S3 Glacier Deep Archive offers low-cost storage and retrieval time doesn`t matter for the company. If the question asks for fast retrieval time then S3 Glacier would be correct.
Option A is incorrect because S3 Glacier is not cheaper than S3 Glacier Deep Archive.
Options C and D are incorrect because they are not suitable for data archive and faster retrieval. Also, the CloudFront is not for storage.
With S3 Glacier, customers can store their data cost-effectively for months, years, or even decades. S3 Glacier enables customers to offload the administrative burdens of operating and scaling storage to AWS, so they don`t have to worry about capacity planning, hardware provisioning, data replication, hardware failure detection, and recovery, or time-consuming hardware migrations.
Amazon S3 Glacier for archiving data that might infrequently need to be restored within a few hours
S3 Glacier Deep Archive for archiving long-term backup cycle data that might infrequently need to be restored within 12 hours
Storage class Expedited Standard Bulk
Amazon S3 Glacier
1–5 minutes
3–5 hours
5–12 hours
S3 Glacier Deep Archive
Not available
Within 12 hours
Within 48 hours
Reference:
https://docs.aws.amazon.com/amazonglacier/latest/dev/introduction.html
https://docs.aws.amazon.com/prescriptive-guidance/latest/backup-recovery/amazon-s3-glacier.html
https://aws.amazon.com/s3/storage-classes/