Utilize the input text as a context reference, choose the right relationship between Arundhati Bhattacharya and State Bank of India from the options. Options: 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.

When Arundhati Bhattacharya took charge as chairman of State Bank of India (SBI) in October 2013, the country's largest lender had more than Rs 65,000 crore of non-performing assets (NPAs).
employer