Ethan is creating a blog about Smartphones. He discovers three keywords: "latest smartphone" with a search volume of 20,000 and a KD of 5, and "men smartwatches" with a search volume of 15,000 and a KD of 0, and "buy smartwatches online" with a search volume of 9,000 and a KD of 0 Which keyword should Ethan consider?