A Company Runs an Application in the Cloud That Consists

A company runs an application in the cloud that consists of a database and a website. Users can post data to the website, have the data processed, and have the data sent back to them in an email. Data is stored in a MySQL database running on an Amazon EC2 instance. The database is running in a VPC with two private subnets. The website is running on Apache Tomcat in a single EC2 instance in a different VPC with one public subnet. There is a single VPC peering connection between the database and website VPC. The website has suffered several outages during the last month due to high traffic. Which actions should a solutions architect take to increase the reliability of the application? (Choose two.)

A) Place the Tomcat server in an Auto Scaling group with multiple EC2 instances behind an Application Load Balancer.
B) Provision an additional VPC peering connection.
C) Migrate the MySQL database to Amazon Aurora with one Aurora Replica.
D) Provision two NAT gateways in the database VPC.
E) Move the Tomcat server to the database VPC.
F) Create an additional public subnet in a different Availability Zone in the website VPC.