challenge: What is the relationship between the key of the French Overture, BWV 831, and the key of the Italian Concerto?
  
  A. They are in the same key
  B. The French Overture is a minor third up from the Italian Concerto
  C. The French Overture is a perfect fifth down from the Italian Concerto
  D. The French Overture is an augmented fourth up from the Italian Concerto
  Answer: 