According to Kautilya's Arthashastra, which of the following are correct?
1. A person could be a slave as a result of a judicial punishment.
2. If a female slave bore her master a son, she was legally free.
3. If a son born to a female slave was fathered by her master, the son was entitled to the legal status of the master's son.
Which of the statements given above are correct?