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: Surgery
What is the 1st thing to be done to a patient with tension pneumothorax- 
Select and explain. 
A. Insertion of wide bore needle in the inter costal space, B. Water seal drainage, C. Leave the patient at rest for air to be absorbed, D. None
A: Insertion of wide bore needle in the inter costal space
Answer: A: Insertion of wide bore needle in the inter costal space 
Explanation: Tension should be immediately released by placement of a large bore needle followed immediately by insertion of a thoracostomy tube.