During trailer coupling, which action helps ensure a safe connection?

During trailer coupling, which action helps ensure a safe connection?

• A. Keep the parking brakes engaged during coupling.
• B. Ensure air supply and brakes are released; parking brakes on; coupling latched; tug test.
• C. Do not verify the latch or perform a tug test.
• D. Delay pre-coupling checks.

Answer: (B)