Which is the best example of author Carolyn Cinami DeCristofano's use of humor in A Black Hole is NOT a Hole? A .If the Sun suddenly turned purple, you wouldn't see it happen. B. Events beyond the black hole's "horizon" are invisible to us. C. Even though you know it's still out there in space, you can't see it. D. After it sinks below the horizon, Earth blocks your view of it.