The EPRs being built in France and Finland were designed by Areva (Paris: FR0011027143 - news ) , another state-owned French firm, but EDF has now taken over Areva's reactor arm and is working on an upgraded EPR it hopes will be easier and cheaper to build.
Refer to the input text as context and select the correct relationship between 'Areva' and 'France' from the available options.
Options: owner of, stock exchange, parent organization, operator