What should you do to prevent your parked vehicle from rolling down a hill?

• You should set your vehicle’s park brake
• You should set your transmission in park or lower gear
• You should park your vehicle at an angle from the curb
• Both A and B
  Explanation:

  "To prevent a parked vehicle from rolling down a hill, always set your park brake and place your transmission in park (for automatic transmission) or low gear (for a manual transmission)."