What does the signalling on this vehicle indicate?

A)That it is a vehicle transporting dangerous goods.
B)That it has a speed restriction.
C)That it is carrying a load that protrudes from the rear.Correct
In any case, the load protruding from the rear of vehicles, except those with a width of less than 1 m, shall be marked with a 50 by 50 cm panel with alternating diagonal red and white stripes, placed at the rearmost end of the load and perpendicular to the vehicle's axis.
When the load protrudes longitudinally across the full width of the rear of the vehicle, 2 panels (V-20) shall be placed so that their stripes form an inverted "V".
When the load protrudes longitudinally across the full width of the rear of the vehicle, 2 panels (V-20) shall be placed so that their stripes form an inverted "V".