Do you have any obligation when your vehicle is about to be overtaken?

Do you have any obligation when your vehicle is about to be overtaken?
A)Yes, signal with the right indicator to show that the manoeuvre can be carried out safely.
B)No, the responsibility lies with the overtaking vehicle.
C)Yes, keep to the right edge of the carriageway to facilitate the manoeuvre.Correct
A driver who notices that another driver following them intends to overtake their vehicle is obliged to keep to the right edge of the carriageway to facilitate the manoeuvre of the overtaking vehicle, except in cases of turns or changes of direction to the left or stopping on that same side. The driver of the vehicle about to be overtaken is obliged to reduce the speed of their vehicle when, once the overtaking manoeuvre has begun, a situation arises that poses a danger to their own vehicle, to the vehicle performing the manoeuvre, to those travelling in the opposite direction, or to any other road user.