Robert, who lives in Ohio, files a lawsuit against Trading Post, a Washington company, in an Ohio state court. The Trading Post's only sales activity outside the state of Washington occurs via its Web site. According to the sliding-scale standard, the Ohio court can always exercise personal jurisdiction over out-of-state defendants based on Internet transactions if the court finds that the defendant has: a. conducted substantial business with Ohio residents through its Web site. b. a commercial cyber presence. c. received a national trademark and domain name for its Web site. d. interacted with at least three Ohio residents through its Web site.