What is the traditional Isan ceremony for welcoming guests and celebrating auspicious occasions with a banana-leaf centrepiece?

• A Rod nam dam hua
• B Wai khru
• C Bai sri su khwan ✓
• D Liang phra

Bai sri su khwan is a northeastern Thai blessing ceremony featuring a decorated banana-leaf cone (bai sri), where an elder ties cotton strings around the honouree's wrists while chanting.