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: Microbiology
Drug of choice for Pneumocystis Pneumonia 
Select and explain. 
A. Cotrimoxazole, B. Penicillin, C. Itraconazole, D. Ivermectin
A: Cotrimoxazole
Answer: A: Cotrimoxazole 
Explanation: Cotrimoxazole is Doc for Pneumocystis Pneumonia.