Exam AWS-SysOps topic 1 question 139 discussion

To achieve cost separation for each account and map it with the right cost center, the finance department can create separate AWS accounts for each department. By setting up a consolidated billing structure, the finance department can have a single paying account that is linked to all the other accounts. Using IAM cross account access with roles, the finance department can grant appropriate permissions to each department's AWS account. This allows the departments to access and manage their own resources while maintaining centralized control over billing. The finance department can assign the appropriate cost center information to each account and easily track the costs associated with each department. This approach provides better isolation, management, and cost separation between the different departments within the organization.

I'm going with A.

A. Create 5 separate accounts and make them a part of one consolidate billing