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': 'True about High roughage in the diet is \nSelect and explain. \nA. Decreases stool transit time, B. Increase stool transit time, C. Normalise stool transit, D. No effect on stool transit time', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Soluble and insoluble fibers are included in the diet. They reduce the intestinal transit time and increase the bulk of stool. They are seen to be beneficial in DM, colon cancer, diverticulitis, constipation, haemorrhoids, IBS etc.', 'role': 'assistant'}]