What will be the result of attempting to run the following program？（）  
public class Qaa75 {  
public static void main（String args[]） {  
String[][][] arr = {  
{ {}， null }，  
{ { "1"， "2" }， { "1"， null， "3" } }，  
{}，  
{ { "1"， null } }  }；  
System.out.println（arr.length + arr[1][2].length）； 
 }  
}  

Which code fragments will succeed in initializing a two-dimensional array named tab with a size that will cause the expression tab[3][2] to access a valid element？（）  
CODE FRAGMENT a：  int[][] tab = {  { 0， 0， 0 }，  { 0， 0， 0 }  }；  
CODE FRAGMENT b：  int tab[][] = new int[4][]；  for （int i=0； i  
CODE FRAGMENT c：  int tab[][] = {  0， 0， 0， 0，  0， 0， 0， 0，  0， 0， 0， 0，  0， 0， 0， 0  }；  
CODE FRAGMENT d：  int tab[3][2]；  
CODE FRAGMENT e：  int[] tab[] = { {0， 0， 0}， {0， 0， 0}， {0， 0， 0}， {0， 0， 0} }；