7. P sues D for negligence in federal court in connection with personal injuries that P sustained in a 3-car accident involving cars driven by P, D, and X. Which of the following is the most accurate statement about actions that may, may not, or must be joined to P’s action against D? (Do not take into account subject matter jurisdiction, personal jurisdiction, or venue in answering this question.)
a. D may, but does not have to, join an action against X for damages that D sustained as a result of X’s negligence in the accident.
b. P may, but does not have to, join an action against D for breach of an unrelated contract.
c. D may, but does not have to, join an action against P for the damages that D sustained as a result of P’s negligence in the accident.
d. If P is suing D for the totality of damages that P sustained due to D’s and X’s conjoined negligence (that is, if P is suing D under the theory that D and X were joint tortfeasors), D must join an action against X for contribution.
e. If P is suing D for the totality of damages that P sustained due to D’s and X’s conjoined negligence (that is, if P is suing D under the theory that D and X were joint tortfeasors), P may not join an action against X for P’s damages due to X’s negligence.