Try using RadioButtonList...
<asp:radiobuttonlist id="RadioButtonList1" runat="server" xmlns:asp="#unknown">
<asp:repeater id="Repeater2" runat="server">
<itemtemplate>
<asp:listitem><%# Eval("ExamQuestionAnswerText")%></asp:listitem>
</itemtemplate>
</asp:repeater>
</asp:radiobuttonlist>