What is the relationship between Bharti Airtel and Vodafone in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.
Text: 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.
user
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assistant