This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Burns, Subject name: Surgery
Falsely elevated haemoglobin is seen in? 
Select and explain. 
A. Chronic renal failure, B. Burns, C. Paroxysmal nocturnal haemoglobinuria, D. Paroxysmal cold haemoglobinuria
B: Burns
Answer: B: Burns 
Explanation: Burns result in Hemoconcentration - Relative polycythemia Chronic renal failure -| Epo | Hb