This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Medicine
All of the following can be used for the prophylaxis of pneumonitis carinni Pneumonia EXCEPT 
Select and explain. 
A. Trimethoprim/Sulfamethoxazole, B. Dapsone 50 mg bid Pdeficien P0 or 100 mg/d P0, C. Aerosolized pentamidine, D. Clindamycin
D: Clindamycin
Answer: D: Clindamycin 
Explanation: None