What is the relationship between Mary Barra and Chief Executive Officer 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.

"GM cannot remain a global leader without making a serious investment towards expanding our presence in growth markets like India," GM Chief Executive Officer Mary Barra said at a briefing in New Delhi.
position_held