In the United States, Ownership of Intellectual Property Rights Is

In the United States, ownership of intellectual property rights is established by "prior use versus registration," which implies that to claim the ownership of a trademark, an individual must

A) be recognized by the United Nations trademark protection agency.
B) pay for the right to own a trademark.
C) establish first use of a trademark.
D) prove the ownership of a trademark in a court of law.
E) register a trademark only in his home country.