Ethel Richperson died, leaving a sizeable estate in Virginia, including the family mansion. "Castle Rock," near Charlottesville, Virginia. What is the basis that the estate executor has to assert jurisdiction over out-of-state heirs and beneficiaries of ethel's estate to require them to come to Virginia and an Virginia court to claim and defend any interest they may have in Castle Rock?

a. Subject matter jurisdiction, because of diversity

b. in rem jurisdiction

c. jurisdiction over person, because there are minimum contacts with virginia, due to their potential claims.

d. all of the above