Which combination of actions should a solutions architect take to meet these requirements MOST cost-effectively?

Explanations:

Moving data to S3 Glacier after a year is not the most cost-effective option because S3 Glacier has a retrieval time of minutes to hours, which does not meet the requirement for data to be immediately available during the first year.

Moving data to S3 Glacier Deep Archive after a year is the most cost-effective option since it offers the lowest storage cost for data that is infrequently accessed. The requirement to wait a day for data retrieval after one year aligns with the retrieval times of Glacier Deep Archive.

Storing all data in S3 Glacier from the start does not meet the requirement for immediate access during the first year, as S3 Glacier is not designed for immediate access and has longer retrieval times.

Using the S3 Standard storage class for the first year allows immediate access to the data, meeting the requirement for accessibility during this period. After one year, transitioning to a lower-cost storage class can be implemented.

The S3 Intelligent-Tiering storage class is designed for automatic cost optimization between frequent and infrequent access but does not specifically address the requirement to minimize costs after the first year. It may lead to higher costs without effectively transitioning to cheaper options like Glacier.