how to tr visiable for radio button is checked in mvc???

<tr>
<td class="form-group">
@Html.LabelFor(model => model.stdfrm_domicilestate, " Candidate is Domicile of", htmlAttributes: new { @class = "control-label col-md-2" })
</td>
<td class="col-md-10">
Maharashtra:@Html.RadioButtonFor(Model => Model.stdfrm_cat_msos, "M")
Out of maharashtra:@Html.RadioButtonFor(Model => Model.stdfrm_cat_msos, "O")
</td>
</tr>
<tr>
<td>
@Html.LabelFor(model => model.stdfrm_domiciletype, " Domicile State(For Outside Maharashtra Candidates) ", htmlAttributes: new { @class = "control-label col-md-2" })

</td>
<td>
@Html.DropDownListFor(Model => Model.state_id, new SelectList(ViewBag.statelist, "StateID", "StateName"), "--select state--", new { id = "ddlName" })
</td>
</tr>