Impossibility to perform one or more of the prestations does not affect the right to choose.
Civil Code
2015 English source edition · Current applicability not established.
This is the 2015 English-language edition attributed in its front matter to the Ministry of Justice. Eri Atlas has not independently verified the translation, later changes, or whether the text is currently in force. Nine passages are incomplete in the available scan and are identified where they occur.
Article 1466
Impossibility to Perform · Preserved transcription; page attribution imported from the source collection. Verify against the original.
However, if the choice is the debtor’s, he may not choose an impossible prestation, unless the impossibility results from a cause which is imputable to the creditor, or the latter consents to the choice.