Question: What is an Indian banking and financial services company headquartered in Mumbai, has a Chairperson that is a former deputy governor of the Reserve Bank of India?
Context: ICICI Bank, stands for Industrial Credit and Investment Corporation of India, is an Indian multinational banking and financial services company headquartered in Mumbai, Maharashtra, India, with its registered office in Vadodara.  In 2014, it was the second largest bank in India in terms of assets and third in term of market capitalisation.  It offers a wide range of banking products and financial services for corporate and retail customers through a variety of delivery channels and specialised subsidiaries in the areas of investment banking, life, non-life insurance, venture capital and asset management.  The bank has a network of 4,850 branches and 14,404 ATMs in India, and has a presence in 19 countries including India. Bandhan Bank Ltd. (Bengali: বন্ধন ব্যাঙ্ক) is an Indian banking and financial services company headquartered in Kolkata, West Bengal.  Bandhan, which started as a micro-finance company in 2001, received banking licence by Reserve Bank of India in 2014. Mr. Jagdish R. Capoor is a former Deputy Governor of Reserve Bank of India.  He is also the Chairman of Manappuram Finance Limited.  Reserve Bank of India. Shyamala Gopinath (born 20 June 1949) is Chairperson of HDFC Bank, India's largest lender by market capitalization.  Gopinath is a former deputy governor of the Reserve Bank of India (RBI), a position she served for seven years.  She was actively involved in managing India's balance of payments crisis in 1991 that led to the first round of economic liberalization.  Making the returns of small saving schemes market-linked was one of most significant recommendations made by the Shyamala Gopinath panel, constituted on July 8, 2010.  Finally, the Government of India in February 2016 notified that instead of annual resetting of interest rates for the next financial year, the interest rates from now on will be reset every quarter based on the G-Sec yields of the previous quarter.  She had earlier assisted the second Narasimhan committee on banking sector reforms. Harun Rashid Khan, popularly known as H R Khan, was a Deputy Governor of Reserve Bank of India for a five-year term between 2011 and 2016 Considered approachable and open to reasoning, Khan has made seminal contribution to India's banking and finance system in the field of rural credit, financial inclusion, internal debt management, external investment and exchange control.  He was appointed as Deputy Governor in July 2011.  He has also been an "Executive Director" of RBI and Director of NABARD. Viral V. Acharya (born 1 March 1974) is an Indian economist who has been appointed as Deputy Governor of Reserve Bank of India (RBI).  He also serves as a member of the advisory council of the RBI Academy and is a member of the Academic Council of the National Institute of Securities Markets (NISM), Securities and Exchange Board of India (SEBI) since 2014.  As of 20 January 2017, he is serving a three-year term as a Deputy Governor of the Reserve Bank of India. State Bank of India (SBI) is an Indian multinational, public sector banking and financial services company.  It is a government-owned corporation with its headquarters in Mumbai, Maharashtra.  On 1st April, 2017, State Bank of India, which is India's largest Bank merged with five of its Associate Banks (State Bank of Bikaner & Jaipur, State Bank of Hyderabad, State Bank of Mysore, State Bank of Patiala and State Bank of Travancore) and Bharatiya Mahila Bank with itself.  This is the first ever large scale consolidation in the Indian Banking Industry.  With the merger, State Bank of India will enter the league of top 50 global banks with a balance sheet size of ₹33 trillion, 278,000 employees, 420 million customers, and more than 24,000 branches and 59,000 ATMs.  SBI's market share will increase to 22 percent from 17 per cent.  It has 198 offices in 37 countries; 301 correspondents in 72 countries.  The company is ranked 232nd on the "Fortune Global 500" list of the world's biggest corporations as of 2016. Rakesh Mohan (born 1948) is an Indian economist and former Deputy Governor of Reserve Bank of India.  He is the Vice Chairperson of Indian Institute for Human Settlements.  He was appointed in November 2012 as an Executive Director of the IMF for a three-year term, and in April 2010, he joined Nestle India, as a non-executive director. "Achiva Nidhi" (Hindi: अचिवा ) is an Indian banking and financial services Nidhi Company headquartered in Vadodara, Gujarat.  Achiva, which started as a Trading company in 2014, received nidhi licence by Ministry of Corporate Affairs and there under Rules & Regulations made by Reserve Bank of India for Nidhi Company in 2015. HDFC (housing development financial corporation) Bank Limited is an Indian banking and financial services company headquartered in Mumbai, Maharashtra.  It has 84,325 employees and has a presence in Bahrain, Hong Kong and Dubai.  HDFC Bank is India’s largest private sector lender by assets.  It is the largest bank in India by market capitalization as of February 2016.  It was ranked 69th in 2016 BrandZ Top 100 Most Valuable Global Brands.
Answer: HDFC