Q.  India, rural incomes are generally lower than the urban incomes, which of the following reasons account for this?1.A large number of farmers are illiterate and know little about scientific agriculture2.Prices of primary products are lower than those of manufactured products3.Investment in agriculture has been low when compared to investment in industry

1. 1,2
2. 1,3
3. 1,2,3
4. 2,3