that depends entirely on how common the borrowed thing is. And anyway, option A is always going to be insufficient for my code-switching example -- as another commenter pointed out, it is very common to want to refer to a foreign work (song, movie, book) by its foreign language title. Monolingual ASR solutions break over this all the time. Try asking Alexa to play a Spanish language track on Spotify. It fails frequently.
The real world is like that.