Fragaria" × "bringhurstii is a naturally occurring hybrid species of strawberry native to the West Coast of the United States. The species results from the natural intercrossing of "Fragaria vesca" and "Fragaria chiloensis", native species whose ranges overlap in that region. Using only the above description and what you know about the world, "Fragaria bringhurstii are in the West Coast but do not happen naturally." is definitely correct, incorrect, or inconclusive? 