This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fundamental Concepts, Subject name: Anaesthesia
Which day is considered as "World anaesthesia day"? 
Select and explain. 
A. 16th September, B. 16th October, C. 16th November, D. 16th December
B: 16th October
Answer: B: 16th October 
Explanation: Ans. (b) 16th OctoberRef.: Miller's 7/e, ch-1, Operations that made history by Harold Ellis understanding anaesthesia by Pillai p 15