I just want to add a radio buttons to my content type I am creating a new content type in Drupal 7 and I would like to add some radio buttons as content types.  This is surprisingly difficult to do.  I have enabled field and options modules but I have yet to see radio buttons show up as an option for numeric or text fields.  How do I do this?

Update: I do not have 'select option' or 'list' as a select-able field type
You can choose the list field type - this will display radio buttons.  List core module will need to be enabled.