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
Scab or crust of abrasion appears brown in: 
Select and explain. 
A. 12-24 h, B. 2-3 days, C. 4-5 days, D. 5-7 days
C: 4-5 days
Answer: C: 4-5 days 
Explanation: Fresh Raw & Reddish 2 - 24 hours Reddish scab (lymph, blood dries up) 2 - 3 days Reddish brown scab 4 - 5 days Brown scab 6- 7 days Scab falls off. Remember the mnemonic RRRBBB