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': 'Which one of the following immunoglobulins is characteristically elevated in filariasis - \nSelect and explain. \nA. IgA, B. IgE, C. IgG, D. IgM', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]