Refer to the input text as context and select the correct relationship between 'Arundhati Bhattacharya' and 'State Bank of India' from the available options.
Options: creator, chairperson, developer, employer

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