What Appalachian folk tradition, rooted in Scottish and Irish customs, involves groups going house-to-house during the Christmas season singing carols in exchange for food and drink?

• A Carolling
• B Wassailing
• C Mumming
• D Old Christmas serenading ✓

In rural Appalachia, serenading on 'Old Christmas' (January 6) preserved pre-Reformation British customs, with groups arriving unannounced to sing until invited inside for refreshments.