The correct option is C Four
The ruminant stomach is composed of 4 separate compartments. Food passes first into the 'rumen', then 'reticulum', 'omasum' and finally into the 'abomasum'. The first three compartments helps in digestion of complex carbohydrates with the aid of microorganisms, which produce volatile fatty acids.The abomasum functions similarly to the carnivore stomach as it is glandular and digests food chemically, rather than mechanically or by fermentation like the other 3 chambers of the ruminant stomach. Hence, option A is correct.