Refer to the input text as context and select the correct relationship between 'Carlos Ghosn' and 'Nissan' from the available options.
Options: employer, chief executive officer, owned by, member of

NEW YORK, Sept 22 Nissan Motor Co CEO Carlos Ghosn said it would be difficult for an automaker to conceal internally an effort to falsify vehicle emissions data, such as has happened at Volkswagen AG.
employer