challenge: What is the estimated amount of gold produced from the Lolworth Creek workings?
  
  A. 500 ounces (14,000 g)
  B. 15,000 ounces (420,000 g)
  C. 7,584 ounces (215,000 g)
  D. 20,000 ounces (560,000 g)
  Answer: 