The distracted driver of a powerboat struck and seriously injured two water skiers who, at time of the accident, were performing a stunt in which one was on the shoulders of the other. The unrelated skiers, who each suffered damages in excess of $100,000, filed a joint complaint based on negligence in a federal court located in the district in which the accident occurred. One of the skiers was a citizen of the forum state. The driver-defendant and the other skier were citizens of a neighboring state. The forum state has a long-arm statute that permits the exercise of jurisdiction to the extent permissible under the Due Process Clause of the Fourteenth Amendment.
Upon which of the following grounds can the driver most likely successfully move for dismissal of the claim asserted by the skier who is not a citizen of the forum state?
A Improper joinder
B Lack of subject matter jurisdiction
C Lack of personal jurisdiction
D Lack of venue