What are the essential features your trailer must have?

• A white license plate light and a red tail light
• Two red reflectors at the rear of the trailer, spaced as far apart as possible
• Two yellow clearance lights at the front of the trailer, spaced as far apart as possible
• All of the above
  Explanation:

  "Your trailer must be equipped with essential lights and reflectors for safety. This includes a white license plate light, a red tail light, two red rear reflectors positioned far apart, and two yellow clearance lights at the front, also spaced far apart to indicate the trailer's width."