A Owns a House and Lot Which Is Made of Concrete

A owns a house and lot which is made of concrete materials. A then sold it to B for purposes of demolition. How do you classify the house?

A) Personal property because it is subject of a contract of sale.
B) Immovable property because by reason of immobilization by destination.
C) Immovable because under Article 415 of the Civil Code, everything attached to an immovable property in a fixed manner in such way that it cannot be separated therefrom without breaking the material falls under immovable property.
D) It is movable or personal property because a building sold to be demolished may be considered personal property because the true object of the sale would be the materials.