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) is replaced by a piece of bacterial DNA when packaged inside phage progeny.
E) Both B and C