Which of the Following Is True That RBI as a Banker

Which of the following is true that RBI as a banker to the government
(i) Maintaining and operating deposit accounts of Central and State Governments.
(ii) Receipt and collection of payments to the Central and State Governments.
(iii) Making payments on behalf of Central and state Governments.
(iv) Providing ways and means advances to the Central and State Governments.

A) Both (i) and (ii
B) Both (iii) and (iv)
C) All the Above
D) None of the above