Why Is It Easy to Transform a Bacterial Cell and Then

Why is it easy to transform a bacterial cell and then use that to transform an animal or plant cell?

A) Because bacteria cells are so small they reproduce the new DNA quickly.
B) Because bacteria cells easily take up, package, and then release DNA such that enzymes can then incorporate the DNA into an animal or plant cell genome.
C) Because bacteria cells have plasmids which cut up DNA into small sequences easily taken up with enzymes by plant and animal cells.
D) Because animal and plant cells get infected by bacteria all the time, so doing that in order to transform them by introducing new DNA doesn't typically kill the cells.
E) Because bacteria "disguises" the foreign DNA so that the plant or animal cell doesn't recognize it and so allows it to mix right in with the cell's own DNA.