Well done Unclued - I don't know how I didn't think of the 4-large letter option, makes more sense than the others although I did like the way the circular approach made it resemble the subject in question.
I do sometimes wonder though if these somewhat ambiguous endings aren't just chucked in every now and again to slash the numbers of all-correct solvers - I stumbled last year on the one with the scoreboard which from the annual stats took out very nearly 40% of entrants which is a ridiculous failure rate.
Did anyone also notice that the initial letters of the examples spelt out a 4th (abbreviated) example? Maybe just a coincidence.