Which of the following pairs of 'polymer : its description' is incorrectly matched?

Cellulose gum : Cellulose derivative with carboxymethyl groups bound to some of the hydroxyl groups of the glucopyranose monomers

Cellodextrin : Indited via the cleavage of cellulose in most anaerobic bacteria by the cellulosome

Cellophane : Created from nitrocellulose and camphor with added dyes and other agents

Cellulose acetate : Acetate ester of cellulose used as a film base in photography

Leatheroid : Cellulose material very similar to vulcanised fibre in physical properties and uses