Which of the following statements about RNA polymerase are correct? (i) RNA polymerase I transcribes rRNAs. (ii) RNA polymerase II transcribes snRNAs. (iii) RNA polymerase III transcribes hnRNA. (iv) RNA polymerase II transcribes hnRNAs.

• A. (i) and (ii)
• B. (i) and (iii)
• C. (ii) and (iii)
• D. (i) and (iv)