What are the 5 provided Roles by ServiceNow?

What are the 5 provided Roles by ServiceNow?
A . System Administrator: The admin role provides access to all platform features, applications, functions and data.
B. Specialized Administrator: Specialized administrator roles manage specific functions or applications, such as Assignment Rules, Knowledge base, reports, or web services
C. Fulfiller: Users with the ITIL role may fulfill ITIL activities associated with the ITIL workflow, including Incident and Change management.
D. Approver: Users with the Approver user role can perform all requester actions and may view or modify approval records directed to the approver
E. Requester: Also known as Employee Self Service (ESS) users, these users have no roles but can submit and manage their own requests, access public pages, etc.

Answer: A,B,C,D,E