What festival, held on the first day of the Coptic month of Tout (usually 11 or 12 September), marks the Coptic New Year and commemorates the 'Era of the Martyrs'?

• A Nayrouz ✓
• B Bairam
• C Sham el-Nessim
• D Kiahk

Nayrouz (from the Coptic 'niiarōou', 'the rivers') marks the first day of the Coptic year 1 AM (Anno Martyrum, 284 CE), commemorating the beginning of Diocletian's persecution, and is celebrated with special foods — particularly red dates (balah ahmar), whose colour symbolizes the blood of the martyrs.