Is it permitted to drive on a dual carriageway below the established minimum speed limit for that road without justified cause?

A)No, because it is an abnormally reduced speed.Correct
B)Yes, although it is mandatory to drive on the hard shoulder.
C)Only if it does not hinder the normal progress of other vehicles.
It is not permitted to drive on a dual carriageway below the established minimum speed limit, which is 60 km/h, without justified cause. Doing so is considered an abnormally reduced speed, which can be dangerous and obstruct the normal flow of traffic.