challenge: What was the outcome of the siege of Réalmont in 1626 after Rossignol broke the Huguenot cipher?
  
  A. The Huguenots received a shipment of ammunition and continued to fight
  B. The siege continued for several more months
  C. The besiegers were forced to retreat due to lack of supplies
  D. The Huguenots surrendered immediately
  Answer: 