challenge: Why did the settlement on the south bank of the Waimakariri River take the European name 'Courtenay'?
  
  A. Because it was named after the best opportunity for fording the river
  B. Because it was named after the European name of the river, which was previously given by Joseph Thomas
  C. Because it was named after the chief surveyor of the Canterbury Association, Joseph Thomas
  D. Because it was named after the nearest city, Christchurch
  Answer: 