Fatburger Inc. is an American fast casual restaurant chain. Its tagline is "The Last Great Hamburger Stand". While it is a fast food restaurant, the food is cooked and made to order. Some Fatburger restaurants have a liquor license, as well as Fat Bars. Its franchise headquarters are in Beverly Hills, California. In addition to the United States, the chain operates in 19 other countries. Using only the above description and what you know about the world, "Fatburger is in at least 19 countries." is definitely correct, incorrect, or inconclusive? 