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You are running a successful multitier web application on AWS and your marketing department has asked you
to add a reporting tier to the application. The reporting tier will aggregate and publish status reports every 30
minutes from user-generated information that is being stored in your web application s database. You are
currently running a Multi-AZ RDS MySQL instance for the database tier. You also have implemented Elasticache
as a database caching layer between the application tier and database tier. Please select the answer that will
allow you to successfully implement the reporting tier with as little impact as possible to your database.

A.
Continually send transaction logs from your master database to an S3 bucket and generate the reports off the
S3 bucket using S3 byte range requests.

B.
Generate the reports by querying the synchronously replicated standby RDS MySQL instance maintained
through Multi-AZ.

C.
Launch a RDS Read Replica connected to your Multi AZ master database and generate reports by querying the
Read Replica.

D.
Generate the reports by querying the ElasliCache database caching tier.

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