Which of the following statements is true regarding "Class 3 of low-speed electric bicycles"?

• It is equipped with a motor that engages only when the rider is pedaling and remain engaged until the speed reaches 28 mph.
• Only persons who are 16 years of age or older can operate it.
• Persons who are under 16 years of age may only ride as a passenger on it.
• All of the above.
  Explanation:

  "Class 3 low-speed electric bicycles are equipped with a motor that engages only when the rider is pedaling and provides assistance when the bicycle reaches 28 mph. Persons may operate a Class 3 low-speed electric bicycle only if they are 16 years of age or older. A person who is under 16 years of age may ride as a passenger on a Class 3 low-speed electric bicycle that is designed to accommodate passengers."