Opponents also point to the foreign owners of Resolution Copper Mining, a subsidiary of British-Australian Rio Tinto and Australian BHP Billiton, saying it's unclear how much of the profits and the copper will stay in the U.S.
Refer to the input text as context and select the correct relationship between 'Resolution Copper' and 'copper' from the available options.
Options: product/material produced, original broadcaster, developer, business division