challenge: What was the condition of Soviet POWs who were forced to construct the Durchgangsstrasse IV road?
  
  A. They were well-fed and well-treated, with a low mortality rate
  B. They were not involved in the construction of the road
  C. They were subjected to poor conditions, with a high rate of deaths and illnesses
  D. They were paid for their work and allowed to return home after the workday
  Answer: 