Recently RBI approved five banks to work with it on a pilot project for its digital currency -- the Digital Rupee, which of the following is not in the list of RBI?

The RBI has roped in at least five banks to work with it on a pilot project for its digital currency -- the Digital Rupee for the retail market. these banks are State Bank of India, ICICI Bank, IDFC First Bank and HDFC Bank. The RBI is working on two fronts to test the central bank digital currency (CBDC): one for the wholesale market, and the other for retail (CBDC-R). The central banker is also weighing whether to build a new framework for its digital currency or make retail CBDC interoperable with the current digital payments system.