Snowball and Napoleon disagree about the defense of Animal Farm. How does Napoleon believe the farm should defend itself?

He believes they should attack Pinchfield and Foxwood.

He believes they should send pigeons to stir up rebellions on other farms.

He believes they should make negotiations with Mr. Pilkington and Mr. Frederick and join the three farms together.

He believes the animals should obtain firearms and learn how to use them.

He believes the animals should obtain firearms and learn how to use them.