B.2 He turns right.

Deciding to turn right Big boy heads down the hallway and sees two man things carrying corpses piled by a little console across the gangway and out a big metal door marked 95. Gunner combat armor and weapons are piled against the wall and a third human wearing a white coat like Evelyn's is looking at them scribbling on a piece of wood.

Somehow no one has spotted him yet. Big boy feels confident he can take these weaklings and steal their weapons. His chest begins to thumb expecting battle like it always has but now his thing bobs along with it, hoping to try out what he just learned.