challenge: Where is the village of Crémarest located in relation to Boulogne?
  
  A. 10 miles (16 km) north of Boulogne
  B. 8 miles (13 km) east of Boulogne
  C. 5 miles (8 km) west of Boulogne
  D. 12 miles (19 km) south of Boulogne
  Answer: 