Read the text and determine if the sentence is true (see options at the end):

According to tradition, they founded Tenochtitlan ( "Place of the High Priest Tenoch" ) after much wandering when they saw on an island in Lake Texcoco the sign that their god Huitzilopochtli had indicated -- an eagle perched on a cactus, eating a serpent .

Sentence: The sign showed an eagle being eaten by a serpent.
OPTIONS: a). Yes; b). It's impossible to say; c). No;