I am doing the online code test. The question is about the javascript function.

Below is a question:

First, answer this code question:
This is a javascript function. Please input the response of this function in the field below.

```js
function test(name, birth_year, current_year) {
  const age = current_year - birth_year;
  const response = name + " is " + age;
  return response;
}

test("jane", 1979, 1990)

```

Enter the return value of the function.
`jane is 11`

This is picture of question:
[![output1](https://i.stack.imgur.com/2ezbp.jpg)](https://i.stack.imgur.com/2ezbp.jpg)

When I have submitted the answer is `jane is 11`. The system told me the answer is wrong. May I ask what is the actual return value of the function? Because the online system didn't let me know the correct answer. Hope someone can guide me on how to solve it. Thanks.