Refer to the input text as context and select the correct relationship between 'iD mobile' and 'Carphone Warehouse' from the available options.
Options: director/manager, owned by, position held, parent organization

The Carphone Warehouse division also provides services to its recently launched iD mobile network , as well as to TalkTalk Mobile and Talk Mobile, around 480,000 customers of which may also be affected.
parent organization