An arrow created inside a method reads this.id. What does arrow.call(other) do?

An arrow created inside a method reads this.id. What does arrow.call(other) do?

1. It reads other.id because call always has highest precedence.
2. It reads the id from the this captured when the arrow was created.
3. It throws because arrows have no call method.
4. It creates a shallow copy of other before reading id.