If a vehicle wants to overtake us on a conventional road with one lane in each direction, what should we do?

If a vehicle wants to overtake us on a conventional road with one lane in each direction, what should we do?
A)We will keep close to the right edge of the road.Correct
B)We will increase our speed.
C)We will decrease our speed.
When we are about to be overtaken, we are obliged to keep close to the right edge of the road, without invading the hard shoulder, and we must not change the speed at which we are travelling, although we should reduce it if a dangerous situation arises, unless the overtaking driver reduces theirs, in which case we must facilitate their return to their lane.
The driver of the vehicle that is going to be overtaken is prohibited from increasing speed or carrying out manoeuvres that prevent or hinder the overtaking.

Drivers of heavy vehicles, large vehicles, or those obliged to respect a specific speed limit must slow down or pull onto the hard shoulder as soon as possible, if practicable, to make way for those following when the density of traffic in the opposite direction, the insufficient width of the road, its profile or condition, do not allow them to be overtaken easily and without danger.
In the event that these drivers cannot keep completely to the right edge of the road and, however, the overtaking can be carried out safely, they will indicate the possibility of doing so to the approaching driver, by extending the arm horizontally and moving it repeatedly back and forth, or with the right indicator.