You leave TC’s warm home and continue toward the marsh.  Upon reaching the marsh, you meet the two guide ducks.  They simply refer to themselves as Duck #1 and Duck #2.  Both ducks look and act alike.   They might even be twins.  Each duck offers to take you across the Marsh for the price of one gold coin.  You know that only one of these ducks can be trusted, but you have no way of telling the two ducks apart.  Which duck to you choose to take you through the Marsh?   

 

Duck 1          Duck 2