challenge: Which two Prefectural Police Departments are exempt from central coordination for operations monitoring and wide area investigation by the Regional Police Bureaus of the National Police Agency?
  
  A. Osaka Prefectural Police Department and Fukuoka Prefectural Police Department
  B. Kyoto Prefectural Police Department and Saitama Prefectural Police Department
  C. Nagoya Prefectural Police Department and Sapporo Prefectural Police Department
  D. Hokkaidō Prefectural Police Department and Tokyo Metropolitan Police Department
  Answer: 