I usually find that it's B. The number of professional programmers who don't have the slightest clue how a database actually works, much less the ability to just spin up a container containing one, is shocking.
Sadly I think that extends to most people about most things. I’m certainly guilty of stating something I’ve heard but don’t actually know from time to time (though I do make a conscious effort not to).
It is funny (or depressing, depending on your point of view) to catch people doing this by asking them when was the last time they did X or how they know whatever they’ve stated and then seeing the gears turn.
