多选题 Given:
1. public class Grids {
2. public static void main(String[] args)
3. int [] [] ia2;
4. int [] ia1 = {1,2,3};
5. Object o = ia1;
6. ia2 = new int[3] [3] ;
7. ia2[0] = (int[])o;
8. ia2[0] [0] = (int[])o;
9. } }
What is the result? (Choose all that apply.)