What is the best way to decompose one end-to-end business process into a collaboration of Experience, Process, and of System APIs?

Refer to the exhibit.

What is the best way to decompose one end-to-end business process into a collaboration of Experience, Process, and of System APIs?
A . Handle customizations for the end-user application at the Process API level rather than the Experience API level.

B . Allow System APIs to return data that is NOT currently required by the identified Process or Experience APIs.

C . Always use a tiered approach by creating exactly one API for each of the 3 layers (Experience, Process and System APIs).

D . Use a Process API to orchestrate calls to multiple System APIs, but NOT to other Process APIs.