The cell envelope in prokaryotes consist of a tightly bound three-layered structure. Arrange these layers centripetally.

• A

  Glycocalyx $\to$ Cell membrane $\to$ Cell wall.

• B

  Cell wall$\to$ Cell membrane $\to$ Glycocalyx.

• C

  Glycocalyx $\to$ Cell wall $\to$ Cell membrane.

• D

  Cell membrane $\to$ Glycocalyx $\to$ Cell wall.