In the context of the input sentence, determine the relationship between 'Airbus Group' and 'MBDA'.
Options: distributed by, member of, owner of, currency

Fri, Jul 31, 2015, 12:23 BST - UK Markets close in 4 hrs 7 mins Airbus Group interested in boosting MBDA stake Reuters - UK Focus – 18 minutes ago 64.92 +2.51
owner of