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': 'Postmoem lividity is unlikely to develop in a case of \nSelect and explain. \nA. Drowning in well, B. Drowning in a fast flowing river, C. Postmoem submersion, D. Drowning in chlorinated swimming pool.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Drowning in fast flowing water (river)', 'role': 'assistant'}]