What is the best practice for implementing this requirement?

An application is running on an EC2 instance. The Developer wants to store an application metric in Amazon CloudWatch.

What is the best practice for implementing this requirement?
A . Use the PUT Object API call to send data to an S3 bucket. Use an event notification to invoke a Lambda function to publish data to CloudWatch.
B . Publish the metric data to an Amazon Kinesis Stream using a PutRecord API call.
Subscribe a Lambda function that publishes data to CloudWatch.
C . Use the CloudWatch PutMetricData API call to submit a custom metric to CloudWatch.
Provide the required credentials to enable the API call.
D . Use the CloudWatch PutMetricData API call to submit a custom metric to CloudWatch.
Launch the EC2 instance with the required IAM role to enable the API call.

Answer: D

Explanation:

https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_use_switch-role-ec2.html