Which of the following statements is/are not correct about the Vijayanagara kingdom?
1. The Vijayanagara kings maintained a complete separation between religion and administration.
2. Land revenue was the main source of income.
3. Administration of the villages was carried out through hereditary officers.
Select the correct answer using the code given below:
1. Only 1 and 2
2. Only 1
3. Only 2 and 3
4. 1, 2 and 3