An application stack includes an Elastic Load Balancer in a public subnet, a fleet of Amazon EC2 instances in an Auto Scaling group, and an Amazon RDS MySQL cluster. Users connect to the application

from the Internet. The application servers and database must be secure.

How should a Solutions Architect perform this task?

A. Create a private subnet for the Amazon EC2 instances and a public subnet for the Amazon RDS cluster.

B. Create a private subne

t for the Amazon EC2 instances and a private subnet for the Amazon RDS cluster.

C. Create a public subnet for the Amazon EC2 instances and a private subnet for the Amazon RDS cluster.

D. Create a public subnet for the Amazon EC2 instances and a public subn

et for the Amazon RDS cluster.