Which Amazon S3 storage class is the MOST cost-effective for long-term storage?

Explanations:

S3 Glacier Deep Archive is the most cost-effective option for long-term storage, offering the lowest storage cost for data that is rarely accessed and has a retrieval time of hours.

S3 Standard is designed for frequently accessed data and is more expensive than Glacier Deep Archive, making it unsuitable for cost-effective long-term storage.

S3 Standard-Infrequent Access is more affordable than S3 Standard but is still costlier than Glacier Deep Archive for data stored long-term.

S3 One Zone-Infrequent Access has a lower cost than Standard-IA but lacks the durability of multi-zone storage, making it less ideal for long-term archival compared to Glacier Deep Archive.