Study the given figure of respiratory passage carefully and identify the parts labelled as A, B, C, D and E.

Options

A. a) `{:("A",B,C,D,E),("Alveolar sac","Secondary brounchus","Alveoli","Bronchioles","Trachea"):}`
B. b) `{:("A",B,C,D,E),("Alveoli","Secondary brounchus","Alveolar sac","Trachea","Bronchioles"):}`
C. c) `{:("A",B,C,D,E),("Alveolar sac","Tertiary brounchus","Alveoli","Trachea","Bronchioles"):}`
D. d) `{:("A",B,C,D,E),("Alveoli","Tertiary brounchus","Alveolar sac","Bronchioles","Trachea"):}`

Answer

A