Select the wrong statements w.r.t cell wall:

• A

  Growth in primary cell wall gradually diminishes as the cell matures.

• B

  The secondary cell wall is formed on the outer side of primary wall.

• C

  The middle lamella is mainly made up of calcium and magnesium pectate.

• D

  Cell wall helps in cell-to-cell interaction and provides barrier to undesirable macromolecules.