Which one of the following links all the ATMs in India?

1. A

   Indian Banks' Association

   (a) Indian Banks' Association. IBA is a bankers’ representative body, not the switch that interconnects ATMs. This is not the key.

2. B

   National Securities Depository Limited

   (b) National Securities Depository Limited. NSDL is a securities depository, not the ATM network. This is not the key.

3. C

   National Payments Corporation of India

   (c) National Payments Corporation of India. (c) Official key: NPCI runs the National Financial Switch (NFS), which interconnects ATMs across banks in India. That is the stored key.

4. D

   Reserve Bank of India

   (d) Reserve Bank of India. RBI regulates payments and licensed NPCI, but the operational ATM link is NPCI’s NFS, not RBI itself. This is not the key.

Summary. Official key is (c) National Payments Corporation of India. NPCI’s National Financial Switch links ATMs nationwide. IBA, NSDL and RBI play other roles in banking and markets. Honour the stored letter (c).