Multi-select problem: How does the next paragraph end?

How to tell if you're being pulled over by a legit police officer
Check to see if it's a marked vehicle.
If the vehicle has police markings, it is highly unlikely that it would be an imposter. A civilian driving a marked police vehicle would most likely be spotted very quickly by an actual police officer, and that individual would quickly get arrested for impersonating an officer.

Choose your answer from:
[1]. The person who pulled you over could have first hand knowledge of the situation and spoke to the police officer. Pay attention to red-nosed police cars.;
[2]. Check for vehicles you can picture when looking up. Even if you currently are not wearing an identification, you should still be observant.;
[3]. If a marked police vehicle is attempting to pull you over, it's generally safe to assume that that individual is a real police officer. Identify the vehicle's make and model.;
[4]. If police cars are speeding, they tend to have other vehicles that are following them as well. To check if a vehicle is a marked police vehicle, pay attention to the radio and other police features.;
[3].