Context: She remained with them until she was four years old , when a run in with an enemy ship caused her parents to bring her ashore to live with her paternal grandparents in Australia . When she was seven , her parents returned and brought her to Long Beach to live with her maternal grandparents . Though they were far apart , her parents were faithful to visit each month and take her on long trips during the summer .

Question: Why did they have to stay with their grandparents ?
Options:
0. They could n't travel due to illness .
1. Their parents were n't responsible .
2. Their parents were traveling .
3. None of the above choices .
Answer: 2