Take context from the input text and decide on the accurate relationship between 'Arundhati Bhattacharya' and 'State Bank of India' from the options provided.
Options: developer, employer, chairperson, 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