Refer to the given diagram of stomach of ruminant mammal with its parts labelled as P, Q, R and S and select the correct option.
AThe parts labelled P, Q, R and S are called reticulum, rumen, abomasum and omasum, respectively.
BThe part labelled Q is true stomach.
CFood is completely digested in chambers P and R.
DDigestion of cellulose takes place in P, S and R.
very long solution