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.
Utilize the input text as a context reference, choose the right relationship between 'Bharti Airtel' and 'Vodafone' from the options.
Options: legal form, owned by, subsidiary, publisher