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: Anaesthesia
Which of the following is not an indication for endotracheal intubation? 
Select and explain. 
A. Maintenance of a patent airway, B. To provide positive pressure ventilation, C. Pulmonary toilet, D. Pneumothorax
D: Pneumothorax
Answer: D: Pneumothorax 
Explanation: Pneumothorax requires urgent needle thoracocentesis and/or Intercostal drainage. Pneumothorax is a known complication of endotracheal intubation and mechanical ventilation and is certainly not an indication for the same.