Singularity

The book I finished today: Singularity, by William Sleator.

If you discovered an event horizon in your playhouse, would you:
  (a) Run like crazy
  (b) Die of extreme gravitation long before you even knew what was going on
  ( c) Have an adventure centered around the time dilation effect that would "obviously" arise from the proximity of the event horizon due to relativistic effects

( The right answer, and Sleator's set of wrong ones )