Pick up the incorrect statement from the following:

A. The built up covered area at the floor level of any storey of a building is called plinth area

B. The usable covered area of the rooms of any storey of a building is called carpet area

C. The carpet area of a building along with area of its kitchen, pantry, store, lavatory, bath room and glazed veranda, is called floor area

D. None of these

Answer: Option D