A vehicle combination 7.30 metres in length is travelling on a road with three lanes in each direction. Which lanes may it use?

A vehicle combination 7.30 metres in length is travelling on a road with three lanes in each direction. Which lanes may it use?
A)Any of them interchangeably.
B)Only the right-hand lane.
C)The right-hand lane and the adjacent one, only when traffic or road conditions advise it.Correct
Outside built-up areas, when one of those carriageways has three or more lanes in the direction of travel, drivers of trucks with a maximum authorised mass exceeding 3,500 kilograms, special vehicles not required to travel on the hard shoulder, and vehicle combinations more than 7 metres in length shall normally travel in the lane furthest to their right, and may use the adjacent lane to overtake or when traffic or road conditions advise it, provided they do not impede the progress of another vehicle following them; all remaining lanes are prohibited for them.