The correct option is 1 and 4. Statement 1 is accurate as NBFCs are prohibited from accepting demand deposits, distinguishing them from commercial banks. Statement 4 is also correct because deposit insurance under the DICGC is not applicable to depositors of NBFCs, emphasizing the greater risk associated with deposits in these companies compared to banks. Understanding these nuances is crucial for UPSC aspirants as they reflect the regulatory framework governing financial entities in India, which is vital for managing economic stability and consumer protection.