In which of the following are the capitalized words used correctly?
"What is an epigram? A dwarfish whole, ITS body brevity, and wit ITS soul."
"What is an epigram? A dwarfish whole, IT'S body brevity, and wit ITS soul."
"What is an epigram? A dwarfish whole, ITS body brevity, and wit IT'S soul."
"What is an epigram? A dwarfish whole, IT'S body brevity, and wit IT'S soul."