What is a central lesson that should be learned about disputes over cultural heritage such as the Parthenon sculptures, known in Britain as the Elgin marbles?

a$.$ collecting artifact from sites and selling antiquities is legal only if the owner or landowner provides permission in writing.

b$.$ the British government owns the Elgin marbles because Lord Elgin had permission to remove them from the Parthenon and take them to England.

c$.$ whichever nation rules a territory has an absolute right to ownership over the cultural heritage, sites, and artifacts of that territory.

d$.$ no single person or nation owns the past; cultural heritage, sites, and artifacts should be protected and conserved, and not commercialized.

e$.$ legal ownership of cultural heritage, sites, and artifacts should be carefully documented by bills of sale.