Lufthansa Group’s low-cost subsidiary Eurowings and UK low-cost carrier easyJet reportedly could become partners , Lufthansa Group chairman and CEO Carsten Spohr told German magazine Der Spiegel .
Take context from the input text and decide on the accurate relationship between 'Lufthansa' and 'Carsten Spohr' from the options provided.
Options: employer, subsidiary, chief executive officer, currency