At the intersection of First Street and Main Street, you will find four gas stations:an Amoco station, a Phillips 66 station, a Quick Trip, and a Skelly station.Last Monday, the owners of the four stations got together for coffee.During their get-together, they reached an agreement to all sell their gas for $2.50 per gallon.Are the four owners in violation of an antitrust law?If so, which law and what rule governs their conduct.If not, why not.Fully explain.