In humans, respiration occurs in the following steps. Arrange these steps in the correct order. A. Diffusion of O 2 and CO 2 between blood and…

In humans, respiration occurs in the following steps. Arrange these steps in the correct order. A. Diffusion of $\displaystyle \mathrm{O}_2$ and $\displaystyle \mathrm{CO}_2$ between blood and tissues B. Diffusion of $\displaystyle \mathrm{O}_2$ and $\displaystyle \mathrm{CO}_2$ across alveolar membrane C. Pulmonary ventilation by which atmospheric air is drawn in and $\displaystyle \mathrm{CO}_2$ rich alveolar air is released out D. Cellular respiration E. Transport of gases by the blood Choose the correct answer from the options given below :