What is one reason why a resource mapping would need to be created?

What is one reason why a resource mapping would need to be created?
A . To map a vRealize Orchestrator inventory type to a custom machine type
B . To map an XaaS blueprint to a resourceaction
C . To map a vRealize Automation catalog resource type to a resource action
D . To map a vRealize Automation catalog resource type to a vRealize Orchestrator inventory type

Answer: D