A company needs to use Amazon S3 to store audio files that are each 5 megabytes in size. The company will rarely access the files, but the company must be able to retrieve the files immediately.
Which S3 storage class will meet these requirements MOST cost-effectively?

A. S3 Standard
B. S3 Standard-Infrequent Access (S3 Standard-IA)
C. S3 Glacier Flexible Retrieval
D. S3 Glacier Deep Archive