This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Modes of Ventilation, Subject name: Anaesthesia
[{'content': 'When was ARDS first described? \nSelect and explain. \nA. 1962, B. 1967, C. 1965, D. 1964', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ARDS was first described in 1967 by ashbaugh & petty. It was defined in 1994 by American European consensus.', 'role': 'assistant'}]