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': 'Difference between contusion and post-moem lividity is that post-moem lividity ? \nSelect and explain. \nA. Shows sequential color change, B. Easily washable, C. Shows diffuse irregular margins, D. Has raised enzyme levels', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Easily washable", 'role': 'assistant'}]