58. Which of the following statements about eukaryotic RNA polymerase II is correct? (A) The yeast RNA polymerase II is composed of 12 different protein subunits. (B) All three eukaryotic RNA polymerases share two common protein subunits. (C) The enzyme is usually located in the nucleolus. (D) The enzyme is mainly responsible for the transcription of tRNA and 5S rRNA genes. (E) Among the three eukaryotic RNA polymerases, RNA polymerase II activity is less inhibited by a-amanitin.