challenge: Where did Jonathan Klinsmann complete part of his preparation for the 2017 FIFA U-20 World Cup?
  
  A. Eintracht Braunschweig and Hertha BSC
  B. VfB Stuttgart II, West Ham United, and Everton
  C. VfB Stuttgart and Bayern Munich
  D. Borussia Dortmund and Schalke 04
  Answer: 