In the Lysogenic Bacteriophage Life Cycle, the λ Chromosome

In the lysogenic bacteriophage life cycle, the λ chromosome

A) replicates and the phage genes take over the bacterium.
B) inserts itself physically into the host cell's chromosome.
C) expresses a repressor protein gene that inhibits the lytic pathway.
D) Both B and C
E) is replaced by a piece of bacterial DNA when packaged inside phage progeny.