Read the following text carefully : According to NITI Aayog, India has a technological advantage to facilitate digital banks. There is a need for creating a regulatory framework for promoting this. NITI Aayog, in its report titled "Digital Banks : A Proposal for Licensing and Regulatory Regime for India", offers a template and roadmap for a digital bank licensing and regulatory regime for a country. India's public digital infrastructure, especially Unified Payments Interface (UPI) has successfully faced this. With Aadhar, India is at the cusp of operationalizing its own open banking framework. This demonstrates that India has the technology stock to fully facilitate digital banks. Digital banking allows a user to set up automatic payments for regular utility bills. Digital banking enables fund transfers to reduce the risk of counterfeit currency. By promoting a cashless society, digital banking restricts the circulation of black money. On the basis of the given text and common understanding, answer the following questions : (a) Which institution has been replaced by NITI Aayog in India ? Who is the ex-officio Chairman of NITI Aayog ? (b) State and discuss any two main advantages of digital banking.