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: Skin
[{'content': 'Laboratory evaluation of a patient with recurrent lip edema shows decreased C4 and CIINH (quantity & function) with normal Clq. Diagnosis is \nSelect and explain. \nA. Hereditary angioedema type II, B. Hereditary angioedema type I, C. Acquired AE type II, D. Acquired AE type I', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B. i.e. Hereditary angioedema type I', 'role': 'assistant'}]