This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anaesthesia
The following ET co2 curve depicts what 
Select and explain. 
A. spontaneous effos, B. bronchos pasm, C. Esophageal intubation, D. Accidental extubation
A: spontaneous effos
Answer: A: spontaneous effos 
Explanation: curare notch ref : willey 10th ed