40. A characteristic of RNA polymerase in humans that is different from bacterial RNA polymerase is(A) that in humans, there are three distinct nuclear RNA polymerases and only one in bacteria.(B) that in bacterial RNA polymerase is directly recruited to the promoter but in human RNA polymerase is recruited to apre-initiation complex.(C) that in human RNA polymerase many additional transcription factors must bind the promoter first before RNA polymerase isrecruited; whereas in bacteria only the sigma factor is required.(D) All the above are characteristics of RNA polymerase that differ between human and bacteria.