Read the following statements
(i) the point of bifurcation of trachea is called carina and is at the level of 5th thoracic vertiebra
(ii)the right bronchus is shorter wider and more in line with trachea than the left bronchus
(iii) the bronchioles are without cartilaginous rings
(iv) the surfactant of lungs is secrated in infants between 6th and 7th month of life
which of these are correct ?

Options

A. I,ii & iii
B. ii , iii & iv
C. I, iii & iv
D. all are correct

Answer

A