How should you set transmission before leaving your vehicle parked on a hill?

• Set it in park if your vehicle has automatic transmission system.
• Set it into reverse if parking downhill.
• Set it into first gear if parking uphill.
• All of the above.
  Explanation:

  "When parking on a hill, setting your transmission correctly is crucial. For vehicles with an automatic transmission, set it in park. If you have a manual transmission, set it into reverse when parking downhill and into first gear when parking uphill."