Utilize the input text as a context reference, choose the right relationship between 'Codelco' and 'copper' from the options.
Options: owned by, position held, headquarters location, product/material produced

We reached an agreement earlier this month with Codelco to repay $7.3 million due to them in respect of negative trade settlement adjustments, which were caused by the sharp drop in copper price in Q1.
product/material produced