Study the following features.

a. A plant is used as packing material for transhipment of living specimens. 

b. It also plays a key role in decomposing the rock making the substance suitable for growth of higher plants. 

The features are shown by a plant belong to 

• A

  Algae

• B

  Pteridophytes

• C

  Bryophytes

• D

  Gymnosperms