A solutions architect wants to cost-optimize and right-size EC2 instances in a single account, ensuring decisions consider CPU, memory, and network metrics. Which combination of actions should the architect take? (Choose two.)

To cost-optimize and right-size EC2 instances based on CPU, memory, and network metrics, you need comprehensive data and analysis. Installing the Amazon CloudWatch agent on EC2 instances and configuring it to collect memory metrics is crucial because EC2's default monitoring does not include memory utilization. Without memory data, right-sizing decisions would be incomplete and potentially inaccurate. Enabling AWS Compute Optimizer for the account then leverages this data (along with CPU and network metrics) to provide intelligent, data-driven recommendations for optimal EC2 instance types, helping to identify under-provisioned or over-provisioned instances. Purchasing AWS Business Support or Enterprise Support, while beneficial for overall AWS operations, does not directly provide the tools or data for instance right-sizing. Enabling AWS Trusted Advisor and reviewing "Low Utilization Amazon EC2 Instances" recommendations is a good start but often lacks the detailed memory metrics needed for precise right-sizing and doesn't offer the comprehensive analysis and recommendations that Compute Optimizer provides. Purchasing an EC2 Instance Savings Plan is a cost-optimization strategy, but it's applied after right-sizing decisions are made, not a method for determining the correct instance size itself.