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
Amphotericin–B is obtained from : 
Select and explain. 
A. Streptomyces nodosus, B. Streptomyces pimprina, C. Streptomyces nousseri, D. Streptomyces fragilis
A: Streptomyces nodosus
Answer: A: Streptomyces nodosus 
Explanation: None