Utilize the input text as a context reference, choose the right relationship between 'Mattel' and 'Barbie' from the options.
Options: creator, owned by, employer, owner of

Bratz's return is well-timed, after Barbie has already taken a knocking from the flyaway success of Disney's Frozen-related merchandise, which recently transferred its licensing rights from Mattel to Hasbro (NasdaqGS: HAS - news ) as of 2016.
owner of