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: Pathology
[{'content': 'Hypersensitivity pneumanitis is classically described as \nSelect and explain. \nA. Type I hypersensitivity reaction, B. Type II hypersensitivity reaction, C. Type III (immune complex) hypersensitivity, D. Type IV (cell mediated) hypersensitivity', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]