Your Organization Has Strict Requirements to Control Access to Google

Your organization has strict requirements to control access to Google Cloud projects. You need to enable your Site Reliability Engineers (SREs) to approve requests from the Google Cloud support team when an SRE opens a support case. You want to follow Google-recommended practices. What should you do?

A) Add your SREs to roles/iam.roleAdmin role.
B) Add your SREs to roles/accessapproval approver role.
C) Add your SREs to a group and then add this group to roles/iam roleAdmin role.
D) Add your SREs to a group and then add this group to roles/accessapproval approver role.