When driving on a two-way road with three lanes, two for my direction and one for the opposite, what is the central lane used for?

When driving on a two-way road with three lanes, two for my direction and one for the opposite, what is the central lane used for?
A)The central one for faster vehicles and the right-hand one for slow vehicles.
B)For overtaking.
C)For overtaking or when traffic or road circumstances advise it.Correct
Normally, you should drive in the right-hand lane. But when traffic or road circumstances advise it, we may use the rest of the lanes in our direction, provided that we do not hinder the progress of other vehicles following us.