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
Rifampicin is obtained from - 
Select and explain. 
A. Sea fish, B. Plant, C. Leaves, D. Bacteria
D: Bacteria
Answer: D: Bacteria 
Explanation: Ans. is `d' i.e., Bacteria Rifampin is a semisynthetic derivative of rifamycin, an antibiotic produced by Streptomyces mediterranei.