Detailed Explanation:

✅ Statement 1 – Correct: Dadabhai Naoroji, the 'Grand Old Man of India', pioneered the 'Drain of Wealth' theory and authored 'Poverty and Un-British Rule in India' (1901), demonstrating how British policies impoverished India.

✅ Statement 2 – Correct: G. Subramania Iyer, co-founder of 'The Hindu', wrote 'Some Economic Aspects of British Rule in India' (1903), criticizing colonial economic exploitation and stagnation.

✅ Statement 3 – Correct: R.C. Dutt, a retired ICS officer, authored 'The Economic History of India' (1902, 1904), documenting the negative impact of British land revenue systems and trade policies.