Death Cap Mushrooms Produce a Substance Called - Amanitin

Multiple Choice

Death cap mushrooms produce a substance called - amanitin. a- amanitin efficiently blocks synthesis of mRNA, but not of tRNA or rRNA in eukaryotic organisms. How is that possible?

A) a- amanitin efficiently interferes with RNA polymerase III, but not RNA polymerase I and II.
B) a- amanitin efficiently interferes with the action of RNA polymerase II, but not RNA polymerase I or III.
C) a- amanitin efficiently interferes with the action of RNA polymerase I, but not RNA polymerase II or III.
D) a- amanitin efficiently blocks the action of one or more basic transcription factors.