Which of the following is the correct output for the program

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Which of the following is the correct output for the program given below?

#include
int main()
{
       int arr[5] = {12, 23);
       printf("%d%d%d\n", a[2], a[3], a[4]);
       return 0;
}

1. Garbage values
2. 2 3 3
3. 3 2 2
4. 0 0 0

Correct Option: D

When an automatic array is partially initialized, the remaining array elements are initialized to 0.

So the the initialization in the question will be equivalent to
int arr[5] = {12, 23, 0, 0, 0);