What does the sign indicate?

What does the sign indicate?
A)It obliges vehicles taller than 3.5 meters to drive on the shoulder.
B)Mandatory route for vehicles with a height equal to or greater than 3.5 meters.
C)Prohibited passage to vehicles with a height (including load) greater than 3.5 meters.Correct
This prohibition sign forbids the entry of any vehicle whose maximum height, including the load, exceeds the indicated figure. In this case, vehicles taller than 3.5 meters are prohibited from passing. It is usually found before a tunnel, bridge or underpass with limited height.