Find the incorrect statement w.r.t. sporopollenin from the following options.

• A

  So far no enzyme that can degrade sporopollenin is known.

• B

  Sporopollenin is one of the most resistant organic material known.

• C

  The germ pores on the pollen grain exine are well covered and protected by sporopollenin.

• D

  Sporopollenin can withstand high temperature, strong acids and alkali.