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: Biochemistry
Which among the following is a Transcription inhibitor? 
Select and explain. 
A. Chloramphenicol, B. Streptomycin, C. Puromycin, D. Amanitin
D: Amanitin
Answer: D: Amanitin 
Explanation: The inhibitors of transcription and its action is very impoant in the entrance exams. Rifampicin: bind beta subunit of polymerase Actinomycin D: inhibit elongation of RNA strands by inhibiting RNA polymerase Streptoglydin Heparin Alpha-Amanitin blocks the translocation of RNA polymerase during transcription Ref: Harper, 27th Edition, Page 351