Your Colleague Proposes to Test the Mechanism of Ant Navigation

Your colleague proposes to test the mechanism of ant navigation by placing a food source 7 meters (m) from the nest. She then takes ants from the nest and places them in a spot that is 4 m from the nest and 3 m from the food source. Based on the previous data, where do you expect the ants to start searching for their nest on their return trip?

A) after they have traveled 3 m from the food source
B) after they have traveled 4 m from the food source
C) after they have traveled 7 m from the food source
D) as soon as they leave the food source