TheScrum Guidetasks the Product Owner with ordering the Product Backlog to maximize value, but it doesn't mandate a specific method like "value points." Option B is correct-using value points (e.g., in techniques like WSJF-Weighted Shortest Job First) is a helpful practice, but empirical validation (market reception) remains the ultimate measure, aligning with Scrum's focus on inspection and adaptation. Option A overstates value points as "ultimate," ignoring real-world feedback. Option C is too rigid; Scrum allows flexibility in tools as long as empiricism is upheld. Thus, B is the best answer.