GKFix MCQ Question

What is the formula for the maximum speed on a banked road when friction is present?

• A. v_max = √(Rg tanθ)
• B. v_max = √(Rg sinθ)
• C. v_max = √(Rg µs)
• D. v_max = √[Rg (tanθ + µs)/(1 - µs tanθ)]