Which of the following rulers of Kano promoted Islam to a state religion?

Rumfa, one of the rulers of Kano promoted Islam to a state religion. Rumfa was a Muslim ruler of the Kano Kingdom, located in what is now modern-day Nigeria. He was a devout Muslim and is credited with making Islam the state religion of Kano during his reign in the late 15th century. He commissioned the building of several mosques in the city, including the famous Kurmi Market mosque, which is still standing today. His efforts helped to spread Islam throughout the kingdom and had a lasting impact on the religious and cultural landscape of the region.