Refer to the input text as context and select the correct relationship between 'Mattel' and 'American Girl' from the available options.
Options: member of, business division, subsidiary, headquarters location

Last year, American Girl — which is owned by toy manufacturer Mattel MAT, -3.02% , which also sells Barbie dolls — discontinued four dolls, two of which were dolls of color, from its historical collection.
subsidiary