The great Dome of Soltaniyeh, one of the largest brick domes ever built, was constructed as the mausoleum of which Ilkhanid ruler?

• A Öljeitü ✓
• B Hulagu Khan
• C Ghazan Khan
• D Abu Sa'id

Öljeitü's early-14th-century double-shell dome at Soltaniyeh anticipated later domes like Florence's Duomo.