challenge: Which of the following is true about Pierre de Corbie?
  
  A. All of his surviving songs are exclusively in the TrouvM and TrouvT manuscripts.
  B. His compositions are widely distributed across various manuscripts.
  C. He primarily composed music for Notre Dame d'Arras.
  D. He was a canon at Notre Dame d'Arras between 1188 and 1195.
  Answer: 