After overtaking the truck, must you immediately return to the right-hand lane if you intend to continue overtaking?

After overtaking the truck, must you immediately return to the right-hand lane if you intend to continue overtaking?
A)Yes, in any case.
B)No, it is not mandatory.
C)No, except when another vehicle is traveling behind at higher speed.Correct
When overtaking on roads with two or more lanes reserved for the same direction of travel, a driver about to perform a new overtaking maneuver may remain in the lane used for the previous one, provided he ensures that he can do so without unduly disturbing drivers of vehicles traveling behind him at greater speed.