Is it possible to style text within a dynamic DropDownList?

I have the code below that is dynamically populated and I would like to give an emphasis (bold, italic) in the " (From xx / xx / xxxx to xx / xx / xxxx) "but if I try to put a tag inside the <option> the system does not understand.

<selectasp-for="Ciclo" class="form-control" onchange="on();consultaResumo(this.value);">
                    @foreach (var item in Model.ListCiclos)
                    {
                        if (item.CiCodigo == Model.CicloAtual.CiCodigo)
                        {
                    <option value="@item.CiCodigo" id="ciclo1" selected>@item.CiCodigo.Substring(4, 2)/@item.CiCodigo.Substring(0, 4) (De @item.CiDtIni.Substring(0, 10) até @item.CiDtFim.Substring(0, 10))</option>
                        }
                        else
                        {
                    <option value="@item.CiCodigo" id="ciclo2">@item.CiCodigo.Substring(4, 2)/@item.CiCodigo.Substring(0, 4) (De @item.CiDtIni.Substring(0, 10) até @item.CiDtFim.Substring(0, 10))</option>
                        }

                    }
                </select>