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: Forensic Medicine
[{'content': 'Floatation of a body in water is due to : \nSelect and explain. \nA. Flesh being eaten by fishes, B. Presence of gases, C. Water logging of body, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Presence of gasses', 'role': 'assistant'}]