Which border-radius values are used to round the corners of this image?

<html>
<head>
  <style>body {
text-align: center;
}


img {border-radius:0 30px 30px 0;}</style>
</head>
<body>

<img src="https://getmimo.com/r/lighthouse.png">

</body>
</html>]]>
The second and third valuesThe first valuesThe third and forth valuesThe first and second values

The second and third values.