Which solution meets these requirements and is MOST cost-effective?

A company wants to move its on-premises network, attached storage (NAS) to AWS. The company wants to make the data available to any Linux instances within its VPC and ensure changes are automatically synchronized across all instances accessing the data store. The majority of the data is accessed very rarely, and some files are accessed by multiple users at the same time.

Which solution meets these requirements and is MOST cost-effective?
A . Create an Amazon Elastic Block Store (Amazon EBS) snapshot containing the data.
Share it with users within the VP
C . Create an Amazon S3 bucket that has a lifecycle policy set to transition the data to S3 Standard-Infrequent Access (S3 Standard-IA) after the appropriate number of days.
D . Create an Amazon Elastic File System (Amazon EFS) file system within the VP
E . Set the throughput mode to Provisioned and to the required amount of IOPS to support concurrent usage.
F . Create an Amazon Elastic File System (Amazon EFS) file system within the VP
G . Set the lifecycle policy to transition the data to £FS Infrequent Access (EFS IA) after the appropriate number of days.

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Answer: D