Consider the following statements about the great relief at Mahabalipuram:

1. A natural cleft in the rock was incorporated into the composition as a water channel.
2. The relief has been interpreted both as the Descent of the Ganga and as Arjuna’s penance.
3. The ascetic figure can consequently be identified with certainty as Bhagiratha alone.
4. The animals include a cat performing penance while rats gather nearby.

Which of the statements given above are correct?