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': 'Diagnosis of X linked agammaglobulinemia should be suspected if- \nSelect and explain. \nA. Low CD 3, B. Female Sex, C. High Isohemagglutinins titers, D. Absent tonsils and no palpable lymph nodes on physical examination', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]