challenge: What is the primary task of the U.S. Army Combat Capabilities Development Command Aviation & Missile Center (AvMC)?
  
  A. To develop doctrine for U.S. Army aviation and missile operations
  B. To provide tactical training to U.S. Army aviation personnel
  C. To conduct research, development and engineering technology for U.S. Army aviation and missile platforms
  D. To oversee the procurement of aviation and missile systems for the U.S. Army
  Answer: 