कौन सा नियामक निकाय भारत में सूक्ष्म वित्त संस्थानों (microfinance institutions) के कामकाज की देखरेख करता है?

Prudential regulation seeks to ensure safety and soundness, while conduct regulation focuses more on fairness and treatment of customers. The distinction is important because:

What is the primary regulatory body for microfinance institutions in India?