On the road shown in the photograph, which lane should you use as a general rule?

A)Any of the lanes in my direction of travel.
B)The centre lane, provided my speed is equal to or greater than that indicated on the sign.
C)The lane furthest to the right.Correct
The sign in the question indicates that the lane or lanes above which the minimum speed sign is placed may only be used by vehicles travelling at a speed equal to or greater than that indicated, although if circumstances allow, they should travel in the right-hand lane.