Well its not a time bound quiz, if you don't know the answer then no one forcing you guess it then and there.
That try to guess. As fluke can gives you point but after the guess, as per my understanding, people then will be less tempted to read the real logic.
QOTD is ... do you understand this area? Don't rush and try to understand.
And as per moderator understanding and the points assigned to this question by SSC clearly means that this really worth it and this is what they also understand from their SSC QOTD discussion experience.
This was just a different thought, if someone can try to think outside of "BOX".
Thanks & Cheers.