Show a button only for certain trust levels

So I have used a plug-in outlet and injected some custom HTML into the extra-nav-item outlet:

<script type="text/x-handlebars" data-template-name="/connectors/extra-nav-item/free-user-button">
    <a id="free-user-button-desktop" href="" class="btn btn-default">
        <svg class="fa d-icon d-icon-plus svg-icon svg-string" xmlns=""><use xlink:href="#plus"></use></svg>
        <span class="d-button-label">
            Click here to ask any math question!

All is well, but how can I display this HTML only to users of a specific trust level, say, 0, 1, 2, 3, or 4?