What is the output of the following code? #include int arr[31], len = 0; void recursive_dec_to_bin(int n) if(n == 0 && len == 0) arr[len++] = 0; return; if(n == 0) return; arr[len++] = n % 2; recursive_dec_to_bin(n/2); int main() int n = -100,i; recursive_dec_to_bin(n); for(i=len-1; i>=0; i--) printf("%d",arr[i]); return 0;

Answer: Option D