Which of the following statements are CORRECT:
A.
An auxiliary thing is for example a key to a door that can exist independently, but due to its purpose and use it has lost its independence and become part of the principle thing.
B.
A public road is a res communis omnium that is not negotiable and is owned by the state and used for the benefit of the public.
C.
Separate bar stools, made of the same wood as a built-in bar and meant to be part of the bar, were part of the bar as accessory things.
D.
A and B