Who should you follow at an intersection when both traffic signs/signals and a police officer are present?

• Follow the traffic signs and signals instead of the police officer.
• Follow the police officer’s directions over the traffic signs and signals.
  Explanation:

  "Always prioritize the instructions of a police or peace officer at an intersection, even if they contradict the traffic signs or signals."
• Do what you think is right.
• Follow neither the signs nor the officer.