Identify  and  in the given diagram of human respiratory system Choose the correct option
a)	A-Epiglottis, B-Trachea, C-Glottis, D-Diaphragm, E-Bronchiole
b)	A-Glottis, B-Trachea, C-Bronchus, D-Diaphragm, E-Bronchiole
c)	A-Adams apple, B-Trachea, C-Bronchus, D-Diaphragm, E-Bronchiole
d)	A-Epiglottis, B-Trachea, C-Bronchus, D-Diaphragm, E-Bronchiole

(d)

A-Epiglottis, B-Trachea, C-Bronchus, D-Diaphragm, E-Bronchiole.

Pair of external nostrils opens above the upper lips, which leads to nasal passage. It opens into the nasopharynx. Nasopharynx opens through the glottis of the larynx region into the trachea. Trachea is a straight tube extending upto mid-thoracic cavity, which divides at the right and left bronchi. Each bronchi undergoes repeated division to form secondary and tertiary bronchi and bronchioles ending up in very thin terminal bronchioles, which gives rise to a number of very thin, irregular walled, vascularized bag like structure called alveoli