What is the maximum speed permitted for work vehicles and commercial vehicles with an all up weight that exceeds 12,000 kg?

1. A Same as any other vehicle on the roadway.
2. B 50 k.p.h on an urban road, and 90 k.p.h on a road with a built diving area;
3. C 40 k.p.h on an urban road, 80 k.p.h on a non-urban road, and 90 k.p.h on a road with a built diving area;
4. D 50 k.p.h on an urban road, and 80 k.p.h on any other type of road;