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How to make other radio button checked?

Hi, I have this script below. I need to change the checked inline radio button to Option 3.
How to do that when I click "Clear All"?

Thanks in advance.

<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>
</head>
<body>

<div class="container">
  <form>
    <label class="radio-inline">
      <input type="radio" name="optradio" checked>Option 1
    </label>
    <label class="radio-inline">
      <input type="radio" name="optradio">Option 2
    </label>
    <label class="radio-inline">
      <input type="radio" name="optradio">Option 3
    </label>
  </form>
</div>

<script language="javascript" type="text/javascript">
    function clearallapplyto()
    {
      //need to set checked at Option 3
    }    
</script>

<div id="mydiv" style="min-height:35px;">
   <big>Apply To&nbsp<span style="color: red">*</span></big>&nbsp
      <a href="#" onclick="clearallapplyto();return false;"><label style="cursor:pointer" class="c">Clear All</label></a>
</div>

</body>
</html>

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ASKER CERTIFIED SOLUTION

Michel Plungjan

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