I need to create a new Vector3 with 0 in all position to sum a list of vectors and mean them. What would be the best way to start it?:

```
Vector3 sum = Vector3.zero;
Vector3 sum = new Vector3();
Vector3 sum = new Vector3(0, 0);
Vector3 sum = new Vector3(0, 0, 0);
```

I will be using this sum like `sum += otherVector`

, so what initialization would be best? I guess the options 3 and 4 should be the same, but what about 1 and 2? Does 1 create a new vector for use? Can I assume that option 2 will create a vector with zero in all fields?