A Company Is Building a Document Storage Application on AWS

Multiple Choice

A company is building a document storage application on AWS. The application runs on Amazon EC2 instances in multiple Availability Zones. The company requires the document store to be highly available. The documents need to be returned immediately when requested. The lead engineer has configured the application to use Amazon Elastic Block Store (Amazon EBS) to store the documents, but is willing to consider other options to meet the availability requirement. What should a solutions architect recommend?

A) Snapshot the EBS volumes regularly and build new volumes using those snapshots in additional Availability Zones.
B) Use Amazon EBS for the EC2 instance root volumes. Configure the application to build the document store on Amazon S3.
C) Use Amazon EBS for the EC2 instance root volumes. Configure the application to build the document store on Amazon S3 Glacier.
D) Use at least three Provisioned IOPS EBS volumes for EC2 instances. Mount the volumes to the EC2 instances in a RAID 5 configuration.