Consider the following statements with respect to the Amara-nayaka system of the Vijayanagara kingdom :

1. The Amara-nayakas were military commanders who were given territories to govern by the king.

2. The Amara-nayakas collected taxes and other dues from peasants, craftspersons and traders in the area.

3. Kings occasionally asserted their control over them by transferring them from one place to another.

Which of the statements given above are correct?