Given below is a list of different steps (i-vi) involved in respiration.
(i) Utilisation of ${\mathrm{O}}_2$ by the cells for catabolic reactions.
(ii) Transport of gases by the blood.
(iii) Pulmonary ventilation by which atmospheric air is drawn in and ${\mathrm{C}\mathrm{O}}_2$ is released out.
(iv) Release of resultant ${\mathrm{C}\mathrm{O}}_2$ .
(v) Diffusion of ${\mathrm{O}}_2$ and ${\mathrm{C}\mathrm{O}}_2$ between blood and tissues.
(vi) Diffusion of gases ( ${\mathrm{O}}_2$ and ${\mathrm{C}\mathrm{O}}_2$ ) across alveolar tissues.

Select an option which has the correct sequence of all the steps.