Both Of The Radio Buttons Can Be Selected

I have form with 2 radio buttons but both of the radio buttons can be selected,

Solution 1:

Give them the same name.

Solution 2:

Description of the radio button control type in the HTML 4.01 specification:

Radio buttons are like checkboxes except that when several share the same control name, they are mutually exclusive: when one is switched "on", all others with the same name are switched "off".

Solution 3:

  <form class="descriptions" id="collection"  method="post" action="">
                          <table width="200">
                              <tr>
                                <td>
                                  <label>Collection</label>
                                  <input type="radio" name="samename" value="collection" />
                                </td>
                                <td>
                                  <label>Delivery</label>
                                  <input type="radio" name="samename" value="delivery"    />
                                </td>  
                            </tr>
                         </table>

                </form>

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