Consider the following statements regarding amara-nayaka system:

1.The features of the system were likely to be derived from iqta system of the Delhi sultanate.

2.The amara-nayakas were military commanders who were given territories to govern by the raya.

3.The amara-nayakas provide contingent to the kings during emergency.

4.For the services rendered by amara- nayakas the kings paid tribute and personally appeared in their court.

Which of the statements given above is/are correct?