A company's IT department noticed an increase in the spend of their developer AWS account. There are over 50 developers using the account, and the finance team wants to determine the service costs incurred by each developer.
What should a SysOps administrator do to collect this information? (Choose two.)

A. Activate the createdBy tag in the account.
B. Analyze the usage with Amazon CloudWatch dashboards.
C. Analyze the usage with Cost Explorer.
D. Configure AWS Trusted Advisor to track resource usage.
E. Create a billing alarm in AWS Budgets.