challenge: What was the original purpose of Erprobungsgruppe 210 when it was formed in July 1940?
  
  A. To bomb Allied shipping and land-based targets
  B. To develop tactical and strategic practices for the Messerschmitt Bf 110
  C. To serve as a test unit for the new Messerschmitt Me 210
  D. To provide air support for the attack on Soviet Russia
  Answer: 