I am trying to access mudradiogroup that is inside the muddatagrid. When i try to select single radiobutton , its select all.
Please check and help me

here is the code and link https://try.mudblazor.com/snippet/QYQIEJmIGpDVaCco

@inject ISnackbar Snackbar

<MudDataGrid Items="@employees" Filterable="false" SortMode="@SortMode.None" Groupable="false">
    <Columns>
        <PropertyColumn Property="x => x.Name" />
       @*<PropertyColumn Property="x => x.Position" />
        <PropertyColumn Property="x => x.YearsEmployed" Title="Years Employed" />
        <PropertyColumn Property="x => x.Salary" Format="C" />
        <PropertyColumn Property="x => x.Salary * x.YearsEmployed" Title="Total Earned" Format="C" />*@
        <TemplateColumn CellClass="d-flex justify-end">
            <CellTemplate>
                <MudStack Row>
                     @* <MudRating Size="@Size.Small" SelectedValue="@context.Item.Rating" />*@

                        <MudRadioGroup T="string" @bind-Value="@SelectedOption" SelectedValue="@context.Item.ispresent" 
                        SelectedOptionChanged="OnSelectedOptionChanged">
        <MudRadio Option="@("Yes")" Value="@("Yes")" Color="Color.Primary">Yes</MudRadio>
        <MudRadio Option="@("No")" Value="@("No")" Color="Color.Secondary">No</MudRadio>
       
    </MudRadioGroup>
                  
                    @*<MudButton Size="@Size.Small" Variant="@Variant.Filled" Color="@Color.Primary">Hire</MudButton>*@
                </MudStack>
            </CellTemplate>
        </TemplateColumn>
    </Columns>
</MudDataGrid>

@code {
    public record Employee(string Name, string Position, int YearsEmployed, int Salary, int Rating,string ispresent);
    public IEnumerable<Employee> employees;
 public string SelectedOption { get; set; }
    protected override void OnInitialized()
    {
        employees = new List<Employee>
        {
            new Employee("Sam", "CPA", 23, 87_000, 1,"No"),
            new Employee("Alicia", "Product Manager", 11, 143_000, 5,"Yes"),
            new Employee("Ira", "Developer", 4, 92_000, 3,"No"),
            new Employee("John", "IT Director", 17, 229_000, 4,"No"),
        };
    }
     private void OnSelectedOptionChanged(string selectedOption)
 {
     SelectedOption = selectedOption;
     Snackbar.Add(selectedOption);
     // call your stuff
 }
}

I am trying to access radioubutton from datagrid in the mud blazor component