challenge: Where did Michitaro Tozuka serve his midshipman tour?
  
  A. Asama on its voyage to Tokyo, Osaka, and Nagoya
  B. Kurama on its voyage to Shanghai and Hong Kong
  C. Asama on its circumpacific voyage to Honolulu, San Francisco, Acapulco and Panama
  D. Naniwa on its voyage to Seoul and Busan
  Answer: 