Shelby Was Recently Found Not Guilty of Strong-Arm Robbery

Shelby was recently found not guilty of strong-arm robbery.  She had a jury trial that ruled in her favor.  Moments after the ruling came down, Shelby turned and looked at the jury and said, "Ha, ha, I am guilty and there is nothing you can do about it now."  The jurors were shocked and wanted to change their verdict.  Shelby laughed all the way home.
Shelby cannot be retried for the same crime in the same jurisdiction based upon.

A) incorporation.
B) fundamental fairness.
C) self-incrimination.
D) double jeopardy.