If, under the worse-case scenario, Greece were to lose the support of the European Union and European Central Bank, default on more of its debts and gradually slide out of the eurozone , the country may have to drop the euro as it is currently used in favour of Greek euros, or reintroduce the "drachma", calling it "new drachma".
Take context from the input text and decide on the accurate relationship between 'eurozone' and 'euro' from the options provided.
Options: industry, currency, owned by, owner of