title: Knockout radio button check binding
body: <p>I have ViewModel in which I have array of "Answers".
  "Answer" is object that has property 'Selected'. In my demo array I have two Answers. For first Selected=1 and for second Selected=0. I have no idea why both radio buttons are selected.
  Here is my demo link - <a href="https://jsfiddle.net/jwoscjot/3/" rel="nofollow">https://jsfiddle.net/jwoscjot/3/</a>
  and my binding is</p>
  
  <pre><code>&lt;input type="radio"  data-bind=" value: Selected, checked: Selected"&gt;
  </code></pre>