The correct option is A Cellulose
The cell wall is the outer rigid protective covering of plant cells, fungal cells and prokaryotes and represents a specialised form of extracellular matrix closely associated with the external cell surface. A plant cell is surrounded by a well developed cellulosic cell wall. The plant cell wall is made up of a gel-like matrix and fine fibrils called microfibrils. Microfibrils are made of cellulose in plant cells. Cellulose is fibrous polysaccharide made up of a large number of glucose molecules joined to each other with β-1, 4 linkages.