If within a built-up area and the road is insufficiently illuminated, we have to immobilise our vehicle due to a breakdown, what lighting will we use?

A)We will not use any lighting because it is within a built-up area.
B)We will use only the hazard warning lights.
C)We will use the hazard warning signal together with the position lights.Correct
Any vehicle that, for whatever reason, is immobilised between sunset and sunrise or under atmospheric conditions that reduce visibility on the carriageway or shoulder of a road, must have its position lights on.
Furthermore, since it is a breakdown, we must accompany the position light with the hazard warning signal.
Furthermore, since it is a breakdown, we must accompany the position light with the hazard warning signal.