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': 'Scab or crust of abrasion appears brown- \nSelect and explain. \nA. Between 12 -24 hour, B. Between 2 - 3 days, C. Between 4 - 5 days, D. Between 5 - 7 days', 'role': 'user'}, {'content': 'Answer: B \nExplanation: At 2 - 3 days the scab is reddish-brown.', 'role': 'assistant'}]