Answer: B) Paradox.
Explanation: A paradox is a logical puzzle that seems to contradict itself, a statement or proposition that leads to a conclusion that seems senseless, logically unacceptable, or self-contradictory. The given sentence is a clear example of a paradox, because it says "I always lie" if the statement is true, that also means that is false (because the person is telling the true), and if the statement is false the person might or might not be telling the true.
