A Developer is investigating an application’s performance issues. The application consists of hundreds of microservices, and a single API call can potentially have a deep call stack. The Developer must isolate the component that is causing the issue.
Which AWS service or feature should the Developer use to gather information about what is happening and isolate the fault?

A. AWS X-Ray
B. VPC Flow Logs
C. Amazon GuardDuty
D. Amazon Macie