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).
In the context of the input sentence, determine the relationship between 'Arundhati Bhattacharya' and 'State Bank of India'.
Options: developer, creator, employer, chairperson