Allows the selection of a single option of many _Option 1 O_ption 2 Op_tion 3 Disabled Three States: Option 1 Three States: Option 2 Three States: Option 3 Disabled Group A: Option 1 Group A: Disabled Group B: Option 1 Group B: Option 3 Group A: Option 2 Group B: Option 2 Group B: Option 4