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
More than 5% carboxy hemoglobin is indicative of 
Select and explain. 
A. Ante mortem burn, B. Drowning, C. HCN poisoning, D. Suffocation
A: Ante mortem burn
Answer: A: Ante mortem burn 
Explanation: There is increased carboxyhemoglobin (>5%) in antemortem burning.