Statements (2) and (3) about the Second Five-Year Plan are correct. C. Mahalanobis was the moving spirit behind the second five-year plan. So, statement (1) is incorrect. The second five-year plan focussed on industry, especially heavy industry. The target of 25% increase in the national income was set through rapid industrialisation. Statement (4) is not correct as the drafters found balancing industry and agriculture very difficult.