What are the core concepts of the IT4IT Reference Architecture at Level 1?

What are the core concepts of the IT4IT Reference Architecture at Level 1?
A . Value Stream, Functional Component, Service Backbone Data Object, Lifecycle Data Object, Relationships.
B . Governance Risk & Compliance, Sourcing & Vendor, Intelligence & Reporting, Finance & Assets, Resource & Project
C . Conceptual Service, Service Release, Service Release Blueprint, Service Catalog Entry, Actual Service
D . IT Value Chain, Strategy to Portfolio, Requirement to Deploy, Detect to Correct, Request to Fulfil

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Answer: A