The correct statement about respiration are
(i) In cockroach gaseous exchange occurs mainly between tracheoles and haemolymph
(ii) increase in inspiratory capacity does not involve an incrase in tidal volume
(iii) partial pressure of oxygen in blood is less than that in alveoli
(iv) chloride shift in ertyrocytes maintain the ionic ablance

Options

A. I and ii
B. I iii and iv
C. I ii andiv
D. ii and iii

Answer

B