16. In this Division—“ ‘X' video”, in relation to—
(a) in the case of a video referred to in subsection 19 (1) or 20 (1)—its supply; or
(b) in any other case—its being offered for retail sale;
includes a video which at the time of that supply or offer was not classified, or which had been refused classification, under the Classification of Publications Ordinance 1983 , but which is later classified as an “X” film.