If we are driving at 70 km/h in the centre lane and there is no other traffic on the roadway, are we doing it correctly?

If we are driving at 70 km/h in the centre lane and there is no other traffic on the roadway, are we doing it correctly?
A)Yes, because I am driving at a speed lower than the maximum indicated.
B)Yes, because I can drive in the lane that best suits my destination.
C)No, I will have to drive in the right-hand lane.Correct
On roads outside built-up areas, as a general rule we will drive in the right-hand lane, and we may use the other lanes when traffic conditions require it. The sign shows us that the road has three lanes and that in the right-hand lane the maximum speed is 80 km/h; since our speed is 70 km/h, we must use this lane.
If we increase our speed and drive at more than 80 km/h, we must compulsorily drive in the centre or left lane, since we would exceed the limit of the right lane.