Find the error(s) in the following recursive method, and explain how to correct it:

Question

```
static int Sum(int n)
{
if (n == 0)
{
return 0;
}
else
{
return n + Sum(n);
}
}
```

Answer 1

The method never reaches the base case. The recursion step should be:
return n + Sum(n - 1);