What will be the output for the following code?

[answerhappygod]

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#include<stdio.h>
void combination(int arr[],int n,int r,int index,int aux[],int i);
void print(int arr[], int n, int r)
{
int aux[r];
combination(arr, n, r, 0, aux, 0);
}
void combination(int arr[], int n, int r, int index, int aux[], int i)
{
if (index == r)
{
for (int j=0; j<r; j++)
printf("%d ",aux[j]);
printf(", ");
return;
}
if (i >= n)
return;
aux[index] = arr;
combination(arr, n, r, index+1, aux, i+1);
combination(arr, n, r, index, aux, i+1);
}
int main()
{
int arr[] = {1, 2,2};
int r = 2;
int n = sizeof(arr)/sizeof(arr[0]);
print(arr, n, r);
return 0;
}
a) 1 2, 1 2, 2 2
b) 1 2, 1 2, 2 2 ,
c) 1 2, 2 1, 2 2 ,
d) 1 2, 2 1, 2 2