Which Type of Regulatory Protein(s)is/are Present in Archaea

Multiple Choice

Which type of regulatory protein(s) is/are present in Archaea?

A) Activators that stimulate RNA polymerase activity are present in Archaea.
B) Repressors that block RNA polymerase activity are present in Archaea.
C) Both activators and repressors are present in Archaea.
D) Similar to regulation in Eukarya, Archaea lack bacterial-like regulators such as activators and repressors and use transcription factors instead.