Which of the following errors will occur when the below code is executed?

[answerhappygod]

#include<stdio.h>
int cat_number(int n)
{
int i,j,arr[n],k;
arr[0] = 1;
for(i = 1; i < n; i++)
{
arr = 0;
for(j = 0,k = i - 1; j < i; j++,k--)
arr += arr[j] * arr[k];
}
return arr[n-1];
}
int main()
{
int ans, n = 100;
ans = cat_number(n);
printf("%d\n",ans);
return 0;
}
a) Segmentation fault
b) Array size too large
c) Integer value out of range
d) Array index out of range