Question

Considering the following function:

```javascript
function sum() {
    return arguments.reduce(function(total, nb) {
        return total + nb;
    }, '');
}
```

What will happen if we execute the following expression?

`sum(1, 2, 3, 4);`

Accepted Answer

A `TypeError` will be raised.

Answer

We will obtain the sum of all the arguments passed, that is to say here `10`.

Answer

We will obtain a new array of values that have been added, that is to say here `[1, 3, 6, 10]`.

Answer

We will obtain the String `1234`.

Answer

We will obtain the String `13610`.

Question from the Javascript test