This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemotherapy: General Principles, Subject name: Pharmacology
Drug of choice for prophylaxis of Pneumocystis jiroveci pneumonia in immunocompromised patients is: 
Select and explain. 
A. Cotrimoxazole, B. Amoxycillin, C. Dexamethasone, D. Cefotetan
A: Cotrimoxazole
Answer: A: Cotrimoxazole 
Explanation: Ans (A) Cotrimoxazole(Ref: Harrison 19/e p1361)Cotrimoxazole is drug of choice forPneumocystis jiroveciNocardiaBurkholderia cepacia