CET Graduation 2022 PYQ Q74

Which of the following is the most likely consequence of implementing the Unified Payments Interface (UPI)?

1. A FDI inflows will drastically increase.
2. B Mobile wallets will not be necessary for online payments. Correct
3. C Direct transfer of subsidies to poor people will become very effective.
4. D Digital currency will totally replace the physical currency in about two decades.