Paytm, the youngest licensee, Reliance Industries , Bharti Airtel , Vodafone , Aditya Birla Nuvo , Sun Pharma founder Dilip Shanghvi , Fino PayTech, Tech Mahindra , National Securities Depository, Cholamandalam Finance and India Post were among the 42 applicants that got approval for starting payments banks.
In the context of the input sentence, determine the relationship between 'Bharti Airtel' and 'Vodafone'.
Options: legal form, subsidiary, publisher, owned by