challenge: Who is credited with converting the Maldivians to Islam, according to Ibn Batuta?
  
  A. Ibn Batuta, a Moroccan traveler
  B. Rannamaari, a demon from the sea
  C. Abu al Barakat ul Barbari, a Shia Muslim visitor
  D. Abu al Barakat ul Barbari, a Sunni Muslim visitor
  Answer: 