Consider the following statements about the evolution of Kathakali:

1. Kathakali originated after the Kottarakkara king watched Krishnanattam and created an alternative performance.
2. Kathakali is considered a "Tauryatrikam" art form combining music, dance, and percussion.
3. The main literary works used in Kathakali are written entirely in Sanskrit.

Which of the above statements are correct?