Quick question about CSS

<p>Hello, I am an international student filling out the CSS Profile. I don't know how to answer this question. Can you please help?</p>

<ol>
<li>Have the student's parent(s) completed an income tax return for the 2013 tax year?</li>
</ol>

<p>Answers that could be chosen
- completed an income tax return
- will file, but have not completed an income tax return
- not required to, and will not file a tax return </p>

<p>Filling tax return is not required in my country, and most of the people, including my parents, don't fill it. So which answer do you think is the most suitable one.</p>

<p>(My parents don't own any businesses and just a normal workers)</p>

<p>Thank you very much! :)</p>