The 53-metre brick tomb tower of Gonbad-e Qabus (built 1006 AD), a UNESCO World Heritage Site, was raised for a ruler of which dynasty?

• A The Ziyarid dynasty ✓
• B The Buyid dynasty
• C The Samanid dynasty
• D The Ghaznavid dynasty

Qabus ibn Voshmgir, the Ziyarid ruler and patron of letters, built the tower as his own mausoleum.