Is it permitted to leave the doors or the boot open to increase load capacity?

Is it permitted to leave the doors or the boot open to increase load capacity?
A)Not the doors, but the boot is allowed if it is secured in such a way that the load cannot fall.
B)No, except in vehicles intended for the transport of goods.
C)No.Correct
It is prohibited to leave the vehicle's doors open or to open them before the vehicle has come to a complete stop.