A Company Runs an Application on a Group of Amazon

Multiple Choice

A company runs an application on a group of Amazon Linux EC2 instances. For compliance reasons, the company must retain all application log files for 7 years. The log files will be analyzed by a reporting tool that must access all files concurrently. Which storage solution meets these requirements MOST cost-effectively?

A) Amazon Elastic Block Store (Amazon EBS)
B) Amazon Elastic File System (Amazon EFS)
C) Amazon EC2 instance store
D) Amazon S3