Unlike Bacteriophage T₄, L Phage Is Capable of Both Lytic

Unlike bacteriophage T₄, l phage is capable of both lytic and lysogenic infection.The lysogenic state is maintained by:

A) Chemical modification of cytosine bases in the viral DNA, forming hydroxymethyl-cytosine.
B) Transcription of the cro gene.
C) Transcription of the gene for the l repressor.
D) Transcription of the xis and cro genes.
E) Exposure of the bacterium to ultraviolet radiation or other DNA-damaging agents.