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: Pharmacology
The drug of choice for Kala azar is : 
Select and explain. 
A. Pentamidine, B. Amphotericin B, C. Sodium stibogluconate, D. Ketoconazole
B: Amphotericin B
Answer: B: Amphotericin B 
Explanation: None