The correct answer is C. Sarcasm sounds positive but is meant to be the opposite
Sarcasm involves a dry sense of humor where something is said ironically to entertain or amuse readers. An instance of sarcasm could be telling someone "Thanks, you've been a great help", when in fact they have been strongly unhelpful and unsupportive towards you. Another instance of sarcasm could be telling some, "Aren't you beautiful?" when in fact they are wearing an ugly ogre costume for Halloween.