challenge: According to legend, what was the purpose of the internal acoustic apparatus in the brazen bull?
  
  A. To alert the executioner when the device had reached the correct temperature
  B. To convert the screams of the dying into what sounded like the bellows of a bull
  C. To amplify the sound of the fire burning beneath the device
  D. To create a loud, intimidating roar to scare the condemned
  Answer: 