Answer: A — Only I, III and IV are correct.
Banks, Self-Help Groups, and Government are formal/beneficial sources offering loans at low interest rates. Agricultural traders charge high interest (3% per month) and impose unfair conditions like forced crop sale, which is not beneficial for Rama.
Source: Money and Credit, Chapter 3
The passage shows that Shyamal borrowed from an agricultural trader at 3% per month (36% p.a.) with the additional unfair condition of selling the crop to the trader at low prices — making it a harmful informal source. Banks offer as low as 8.5% p.a., SHGs provide loans at reasonable rates, and Government schemes support farmers. So the trader (Option II) is NOT beneficial, eliminating options B, C, and D.