This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and paranasal sinuses, Subject name: ENT
Most common cause of bleeding in children 
Select and explain. 
A. Nose picking, B. Hypeension, C. Tumor, D. None
A: Nose picking
Answer: A: Nose picking 
Explanation: Most common cause of nose bleeding in children - Trauma to the little's area. Fingernail trauma is common. Ref : Dhingra 7e pg 197.