Correct option is A
The correct answer is (a) Unified Payments Interface.
Explanation:
● UPI is an instant real-time payment system developed by the National Payments Corporation of India (NPCI).
● It facilitates inter-bank peer-to-peer and person-to-merchant transactions.
Information Booster:
● UPI allows multiple bank accounts into a single mobile application.
● Transactions are authenticated via a secure 4 or 6-digit UPI PIN.