Gaze into my crystal ball.
Oh no! A dark wizard has cast a spell on you. He keeps presenting you with a pair of Harry Potter characters and forcing you to murder one. You have amnesia (from a recent Quidditch accident), so you can’t remember which characters die in the books. You won’t be able to base your choices on that. How will you decide who has to go?
To MRE or not to MRE: that is the question.
Pick one per pair - and leave the other one lonely and crying.