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': 'Idiopathic thrombocytopenic purpura is due to which type of hypersensitivity? \nSelect and explain. \nA. Type I Hypersensitivity, B. Type II Hypersensitivity, C. Type III Hypersensitivity, D. Type IV Hypersensitivity', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Involve activation of complement by IgG or IgM binding to an antigenic cell.\nAntigenic cell is lysed.', 'role': 'assistant'}]