Multiple ARTs in a Value Stream typically require coordination at the Value Stream Level.
Correct Answer: A
In SAFe, when a solution requires more capacity than a single ART (Agile Release Train) can provide, multiple ARTs are grouped into a Solution Train. These ARTs work together within a Value Stream. The Value Stream level provides coordination, additional roles, and artifacts to align the multiple ARTs toward delivering larger, complex solutions.
"When multiple ARTs collaborate to build a solution, coordination at the Value Stream level is required. The Solution Train roles and events support alignment and integration of the work across ARTs and Suppliers." References:
SAFe 6.0 Framework: Solution Train and Value Stream Level
SAFe 6.0 SPC Guide: "Establishing Team and Technical Agility" module