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
All the following are used in the treatment of Pneumocystis carinii except: 
Select and explain. 
A. Pentamidine, B. Dapsone, C. Cotrimoxazole, D. Fluoroquinolones
D: Fluoroquinolones
Answer: D: Fluoroquinolones 
Explanation: Answer is D (Fluoroquinolones): Fluoroquinolones are not used in the treatment (. P. carinii infection. Drugs used for treatment of Pneumocystis carinii infection include: Agent Disease First choice drug Second choice Third choice Pneumocystis carinii Mild to moderate pneumonia Trimethoprim Sulfamethoxazole Trimethoprim -- Dapsone Clindamycin -- Primaquine Atovaquone Sever pneumonia Trimethoprim Sulfamethoxazole Pentamidene Clindamycin-Primaquine Trimetroxate Drug of choice for all forms of pneumocystosis: Trimethoprim-Sulfamethoxazole (Cotrimoxazole)