When is a driver required to drive on the “hard shoulder” - where the “shoulder” is asphalt-paved and free of traffic - in order to allow another vehicle to overtake him?

1. A When the vehicle drives very slowely for any reason.
2. B Only when the vehicle is forced to drive slowly on a steep uphill climb, and disturbs the free traffic.
3. C When a driver of a motor vehicle is forced to drive very slowly due to the freight he’s carrying or to the steepness of the road, and he delays the traffic behind him.
4. D Never. It is prohibited to drive on the “hard shoulders”; hence, a vehicle that delays the traffic behind it should pull into the “hard shoulder” and stop, to allow the traffic congestion behind him to open up.