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': 'In a larger bruise, the colour changes begins at: \nSelect and explain. \nA. The periphery, B. From the centre, C. There is no rule, D. No colour change', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In a larger bruise, the colour change stas from periphery (healing of contusion) The contusion regains its normal colour in 1-2 weeks.', 'role': 'assistant'}]