In the Yazd region's Ashura ceremonies, what is the 'nakhl' that dozens of men carry on their shoulders?

• A A huge wooden structure symbolising Hussein's coffin ✓
• B A palm tree planted for the occasion
• C A brass cauldron of nazri food
• D A tent of black banners

Nakhl-gardani sees enormous decorated wooden 'palms', some weighing tons, carried in procession.