Airtel M Commerce Services Ltd, a unit of Bharti Airtel - the world's third-largest telecom company by number of subscribers - is among 41 applicants, including the likes of Reliance Industries, Aditya Birla Group, Tech Mahindra, Vodafone and Videocon, who are seeking payment bank licences.
In the context of the input sentence, determine the relationship between 'Bharti Airtel' and 'Vodafone'.
Options: founded by, product/material produced, subsidiary, owned by