Assume variable a is stored at memory address 0x80490000. What is the value stored in the pointer variable ptr for the following cases? Case 1 char a[8; char *ptr&a 4]; Case 2 struct Pointt int x; int y; int z; struct Point a; int *ptr-&a.y Case 3 struct Node int count; int nums [ 5]; struct Node a; int *ptr-&a. nums [ 4] Case 1 IChoose ] Case 2 IChoose ] Case 3 IChoose ]