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
Predisposing factors for Pneumococcal Pneumonia include all of the following Except: 
Select and explain. 
A. CRF, B. Lymphoma, C. Old Age, D. Thalassemia
D: Thalassemia
Answer: D: Thalassemia 
Explanation: Answer is D (Thalassemia): Thalassemia has not been mentioned in the list of conditions that commonly predispose to pneumococcal infection Thalassemia is the single best answer of exclusion.