Consider the Following Code Snippet

Consider the following code snippet:
Int[][] arr =
{
{ 1, 2, 3, 0 },
{ 4, 5, 6, 0 },
{ 0, 0, 0, 0 }
};
Int[][] arr2 = arr;
System.out.println(arr2[2][1] + arr2[1][2]) ;
What is the output of the given code snippet on execution?

A) 5
B) 6
C) 7
D) 9