Prokaryotes are characterized by:

• A
  $A$ true nucleus with a double-layered nuclear membrane is absent.
• B
  $A$ well-developed nucleus with a double-layered nuclear membrane is present.
• C
  Presence of a cell wall made of chitin,mucopolysaccharides,and absence of cell organelles like mitochondria and chloroplasts.
• D
  Autotrophic in nature and only $DNA$ is present.