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: Forensic Medicine
Which of the following protein synthesis inhibitor are non?plant toxin: 
Select and explain. 
A. Streptomycin, B. Abrin, C. Ricin, D. Emetine
A: Streptomycin
Answer: A: Streptomycin 
Explanation: A i.e. Streptomycin