When Designing a Typical Three-Tier Web Application, Which AWS Services

When designing a typical three-tier web application, which AWS services and/or features improve availability and reduce the impact failures? (Choose two.)

A) AWS Auto Scaling for Amazon EC2 instances
B) Amazon VPC subnet ACLs to check the health of a service
C) Distributed resources across multiple Availability Zones
D) AWS Server Migration Service (AWS SMS) to move Amazon EC2 instances into a different Region
E) Distributed resources across multiple AWS points of presence

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