This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gram-Positive Infections - Corynebacterial Infections, Subject name: Forensic Medicine
Brown colour of contusion is due to: 
Select and explain. 
A. Biliverdin, B. Reduced hemoglobin, C. Haemosiderin, D. Bilirubin
C: Haemosiderin
Answer: C: Haemosiderin 
Explanation: Ans. (C). Haemosiderin(Ref: Review of Forensic Medicine & toxicology; Gautum Biswas; 2nd edition; Pg- 193)ColourPigmentTime DurationRedOxy haemoglobinFreshBlueQDeoxyhaemoglobinQFew hours - 3 daysBrownQHemosiderinQ4 -5 daysGreenBiliverdin/ hematoidin6 -7 daysYellowBilirubin7-14 days