Which fire festival, held on 31 January in Shetland, involves a procession of guizers carrying burning torches and a replica longship?

• A Up Helly Aa ✓
• B Beltane Fire Festival
• C Lewes Bonfire
• D Burning of the Clavie

Up Helly Aa is a midwinter festival in Lerwick celebrating Shetland's Norse heritage; a full-size Viking longship is ceremonially burned at the procession's climax.