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': 'Marbling in summer occurs within: WB 11 \nSelect and explain. \nA. 18 h, B. 36 h, C. 48 h, D. 72 h', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. 36 h', 'role': 'assistant'}]