Ok, you hit your drive...left near a road parallel to the hole you're playing. Unaware your ball is out of bounds, you hit the ball and continue the hole, when your playing partner notifies you your ball was out of bounds. What's your penalty?
a) 1 stroke - return to where the ball was, drop within 2 clubs of in bounds, take the 1 stroke penalty, ignoring the stroke taken while hitting the OB ball before, and move on. Lying 2 hitting 3.
b) 2 strokes - Take the 1 stroke penalty plus a stroke for hitting a ball that's OK, and return to the tee for the stroke and distance penalty and try again. Lying 3, hitting 4.
c) 3 strokes - 2 strokes for playing the wrong ball since your second shot was no longer a legit ball since it was OB. Then tack on the stroke and distance penalty for hitting the orignal ball OB. Return to the tee lying 4, hitting 5