Which type of vehicle is allowed to stop or be left standing on the hard shoulder of an inter-urban road which is marked as a main road?

1. A A work vehicle or a tractor.
2. B A vehicle engaged in selling fruits and vegetables to passersby.
3. C A vehicle engaged in public works and an I.D.F vehicle - for the purpose of fulfilling their duties.
4. D A towing vehicle and a trailer, a truck tractor and a semi-trailer, with a maximum width of three meters.