When Bacteriophage L Integrates into the Bacterial Chromosome,it Does So

When bacteriophage l integrates into the bacterial chromosome,it does so at:

A) An att P site in the host chromosome.
B) An att B site in the phage chromosome.
C) An att B site in the host chromosome using a lambda-encoded integrase
D) An att B site in the host chromosome using a bacteria-encoded integrase.
E) An att B site in both the host and phage chromosomes