The question itself doesn't have a correct answer. That means that you can't get a correct answer and that therefore B: 0% is correct.
But if choose an answer at random then you have only 25% chance of selecting B, therefore 25% is the correct answer.
But because two options have 25% as their answer, then you have 50% chance of getting the "correct" answer, which would make C 50% the correct answer.
But we already know that getting the "correct" answer of B is only 25%, so we can't determine the chance of getting a "correct" answer (it is indeterminate), and anyway as I stated originally the question is not of a type that can yield a correct answer.
So there is no correct answer to this question, which means you have 0% of answering it correctly ....
The question can't be answered by choosing an option from the four listed, but only outside of that "answer space". The only way to win is not to play.