challenge: Who organized the revolt that led to the downfall of Al-Kamil Sha'ban?
  
  A. Al-Salih Ismail on behalf of his brother al-Nasir Muhammad
  B. Emir Shams ad-Din Aqsunqur on behalf of his brother al-Nasir Muhammad
  C. Emir Shams ad-Din Aqsunqur on behalf of his brother al-Muzaffar Hajji
  D. Al-Muzaffar Hajji on behalf of his brother al-Salih Ismail
  Answer: 