Nasal cavity and oral cavity are separated by

The total lung capacity can be calculated using:

A) Inspiratory capacity $\left(\mathrm{IC}\right)$

B) Functional residual capacity $\left(\mathrm{FRC}\right)$

C) Vital capacity $\left(\mathrm{VC}\right)$

D) Inspiratory reserve volume $\left(\mathrm{IRV}\right)$

E) Residual volume $\left(\mathrm{RV}\right)$

F) Expiratory reserve volume $\left(\mathrm{ERV}\right)$

G) Tidal volume $\left(\mathrm{TV}\right)$

Statement $\left(\mathrm{S}\right)$: In rabbits, the caecum of large intestine is important for cellulose digestion.

Reason $\left(\mathrm{R}\right)$: Large intestine secretes an enzyme known as cellulase to digest cellulose in rabbit.