This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
[{'content': 'The risk groups for pneumococcal pneumonia includes all of the following except: \nSelect and explain. \nA. Chronic renal failure, B. Lymphoma, C. Old Age, D. Thalassemia', 'role': 'user'}, {'content': "Answer: D \nExplanation: Asplenia or splenic dysfunction, chronic respiratory disease, chronic hea disease, chronic kidney disease, Diabetes, Immunosuppression/immunocompromised, extremities of age, smoking, alcoholism, crowding, prior hospitalization ..etc are clinical risk groups for pneumococcal infection(Ref: Harrison's 19/e 949)", 'role': 'assistant'}]