A company's application running on Amazon EC2 Linux recently crashed because it ran out of available memory. Management wants to be alerted if this ever happens again.
Which combination of steps will accomplish this? (Choose two.)

A. Create an Amazon CloudWatch dashboard to monitor the memory usage metrics on the instance over time.
B. Create an alarm on the dashboard that publishes an Amazon SNS notification to alert the CIO when a threshold is passed.
C. Create an alarm on the metric that publishes an Amazon SNS notification to alert the CIO when a threshold is passed.
D. Create an alarm on the AWS Personal Health Dashboard that publishes an Amazon SNS notification to alert the CIO when the system is out of memory.
E. Configure the Amazon CloudWatch agent to collect and push memory usage metrics on the instance.