What is one way to develop sufficient Architectural Runway for the Agile Release Train?

What is one way to develop sufficient Architectural Runway for the Agile Release Train?
A . Ask the teams to commit only to Enablers as their Program Increment (PI) Objec-tives during the PI Planning event and address Features as uncommitted objec-tives for the first PI
B. Create alignment with the System Architect and Product Management that the first Program Increment (PI) is all about Enablers in order to plan for creating business value in the second PI
C. Ask the Business Owner which Enablers have high business value
D. Work with Product Management and System Architects to identify future Features and determine the Enablers to achieve them

Answer: D