GKFix MCQ Question

How is the angular momentum of a system of particles about the origin defined?

• A. L = Σ (rᵢ · pᵢ)
• B. L = Σ (pᵢ × rᵢ)
• C. L = Σ (rᵢ + pᵢ)
• D. L = Σ (rᵢ × pᵢ)