A Solutions Architect is designing a highly scalable system to track records. These records must remain available for immediate download for up to three months and then must be deleted. What is the most appropriate decision for this use case?

Answer options:

A.Store the files in Amazon EBS and create a Lifecycle Policy to remove files after 3 months.
B.Store the files in Amazon S3 and create a Lifecycle Policy to remove files after 3 months.
C.Store the files in Amazon Glacier and create a Lifecycle Policy to remove files after 3 months.
D.Store the files in Amazon EFS and create a Lifecycle Policy to remove files after 3 months.

Correct Answer – B
Option A is incorrect since the records need to be stored in a highly scalable system.
Option C is incorrect since the records must be available for immediate download.
Option D is incorrect since EFS lifecycle management is used to migrate files that have not been accessed for a certain period of time to the Infrequent Access storage class. Files moved to this storage remain indefinitely and not get deleted. And due to this reason, this option is not correct.
AWS Documentation mentions the following about Lifecycle Policies:
Lifecycle configuration enables you to specify the Lifecycle Management of objects in a bucket. The configuration is a set of one or more rules, where each rule defines an action for Amazon S3 to apply to a group of objects. These actions can be classified as follows:
Transition actions – In which you define when the transition of the object occurs to another storage class. For example, you may choose to transition objects to the STANDARD_IA (IA, for infrequent access) storage class 30 days after creation or archive objects to the GLACIER storage class one year after creation.
Expiration actions – In which you specify when the objects will expire. Then Amazon S3 deletes the expired objects on your behalf.
For more information on AWS S3 Lifecycle Policies, please visit the following URL:
https://docs.aws.amazon.com/AmazonS3/latest/dev/object-lifecycle-mgmt.html 
 To know more about EFS Lifecycle Management, please check the following URL:
 https://docs.aws.amazon.com/efs/latest/ug//lifecycle-management-efs.html