This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastrointestinal System, Subject name: Physiology
Sho-chain fatty acids produced by bacteria are maximally absorbed in 
Select and explain. 
A. Duodenum, B. jejunum, C. ileum, D. Colon
D: Colon
Answer: D: Colon 
Explanation: Sho-chain fatty acids are produced in the colon, by the action of colonic bacteria on complex carbohydrates, and other dietary components that could not be digested in the small intestine. These sho-chain fatty acids are absorbed from the colon.