This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mechanical Injuries, Subject name: Forensic Medicine
[{'content': 'What is the age of abrasion? \nSelect and explain. \nA. 12-24 hrs, B. 1-2 day, C. 2-3 day, D. > 7 days', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Scab has amost completely peeled off which indicates age >7 days Healing of Abrasion Fresh: Reddish in colour By 12- 24 hrs: Reddish Scab is formed (the scab formation occurs due to drying of superficial blood and lymph) By 2-3 days: Reddish brown scab By 4-7 days:Dark brown scab is formed,Epithelium grows under the scab and eventuallyScab stas falling off from margins After 7 days: Scab falls off leaving a depigmented area; later becomes pigmented.', 'role': 'assistant'}]