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: Medicine
[{'content': "All of the following statement about Kawasaki's disease are true except -a) It is the most common immune mediated vasculitis in childrenb) Coronary artery aneurysm is seen in 25% of patientsc) Intravenous immunoglobulin is indicated only in patients with coronary artery aneurysmd) Skin, mucus membranes and lymph nodes are involved \nSelect and explain. \nA. a, B. ac, C. ad, D. b", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]