Группировка RadioButton

string[] quest = new string[] {"Кто дурак?","Кто дура?","Как быть?"};
string[] answer = new string[] {"Он","Она","Мы","Он","Она","Мы","Так","Вот так","Ни как"};
Label[] label = new Label[3];
RadioButton[] button = new RadioButton[9];
int yButton = 20, yLabel = 20, ind = 0;
for (int i = 0; i < 3; i++)
  {
    label[i] = new Label();
    label[i].Text = quest[i].ToString();
    label[i].Width = 150;
    label[i].Height = 30;
    label[i].Font = new Font("Microsoft Sans Serif", 16);
    label[i].Location = new Point(20, yLabel);
    splitContainer1.Panel2.Controls.Add(label[i]);
    yButton = yLabel;
    yLabel += 120;
    for (int j = 0; j < 3; j++)
   {
     yButton += 30;
     button[ind] = new RadioButton();
     button[ind].Text = answer[ind].ToString();
     button[ind].Width = 150;
     button[ind].Height = 30;
     button[ind].Font = new Font("Microsoft Sans Serif", 10);
     button[ind].Location = new Point(20, yButton);
     splitContainer1.Panel2.Controls.Add(button[ind]);
     ind++;
   }
}

splitContainer1.Panel2.Controls.Clear(); //очистка правого контейнера
string[] quest = new string[] {"Кто дурак?","Кто дура?","Как быть?"};
string[] answer = new string[] {"Он","Она","Мы","Он","Она","Мы","Так","Вот так","Ни как"};
Label[] label = new Label[3];
RadioButton[] button = new RadioButton[9];
Panel[] groupButtons = new Panel[3];
int yPanel = 20, yLabel = 20, ind = 0;
for (int i = 0; i < 3; i++)
{
    label[i] = new Label();
    groupButtons[i] = new Panel();
    label[i].Text = quest[i].ToString();
    label[i].AutoSize = true;
    label[i].Font = new Font("Microsoft Sans Serif", 16);
    label[i].Location = new Point(20, yLabel);
    splitContainer1.Panel2.Controls.Add(label[i]);
    yPanel = yLabel + 20;
    yLabel += 120;
    groupButtons[i].AutoSize = true;
    groupButtons[i].Location = new Point(20, yPanel);
    int yButton = 0;
    for (int j = 0; j < 3; j++)
    {
        yButton += 20;
        button[ind] = new RadioButton();
        button[ind].Text = answer[ind].ToString();
        button[ind].AutoSize = true;
        button[ind].Font = new Font("Microsoft Sans Serif", 10);
        button[ind].Location = new Point(20, yButton);
        groupButtons[i].Controls.Add(button[ind]);
        ind++;
    }
    splitContainer1.Panel2.Controls.Add(groupButtons[i]);
}