The Roman Catholic Church played an important role in the development of government and law under ...

The Roman Catholic Church played an important role in the development of government and law under the Norman kings. Under William, it led to the establishment by the Church of ecclesiastical courts wherein the Church’s canon law was applied to members of the Church. This led to the modern rule that
a.   you could choose which court you preferred to be tried in.
b.   the French would retain civil law while the English controlled criminal law.
c.   one could be tried in both courts and everyone could be tried more than once for the same wrong.
d.   no one should be tried in both court and no one shall be tried more than once for the same wrong.