This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'Urobilinogen is formed in the: September 2006 \nSelect and explain. \nA. Liver, B. Kidney, C. Intestine, D. Spleen', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C: IntestineUrobilinogen is a colourless product of bilirubin reduction. It is formed in the intestines by bacterial action. Some urobilinogen is reabsorbed, taken up into the circulation and excreted by the kidney. This constitutes the normal "enterohepatic urobilinogen cycle".Urobilinogen content is determined by a reaction with Ehrlich\'s reagent, which contains para-Dimethyl amino benzaldehyde and may be measured in Ehrlich units', 'role': 'assistant'}]