The correct option is B Omasum
In ruminants, the stomach is differentiated into separate chambers - rumen (for churning, digestion of cellulose and hemicellulose and bacterial fermentation), reticulum (traps and stores temporarily large feed particles), omasum (absorbs water) and abomasum (similar to human stomach, digests proteins). Abomasum is the true stomach. Omasum is absent in camels. In camels rumen and reticulum have diverticula or water pockets for temporary storage of food.