Which among the following is incorrect about the layers of the cell wall?

• A. The cell wall is made of three main layers, namely, primary cell wall, secondary cell wall and middle lamella
• B. Cell wall of a young plant is made of primary cell which composes a loose network of cellulose microfibrils
• C. Secondary cell wall forms as the cell matures and composes cellulose and lignin
• D. Middle lamella separates cells and is composed of sodium acetate