Why should you not park your vehicle at or near the site of a fire, explosion, motor vehicle crash, or other incidents?

• Because it would obstruct traffic
• Because it would obstruct emergency response personnel and equipment
• Because it would be helpful for emergency response personnel to pass through
• Both A & B
  Explanation:

  "Do not park your vehicle at or near the site of a fire, explosion, motor vehicle crash, or other incidents, where parking would obstruct traffic or emergency response personnel and equipment."