challenge: What is Tsutomu Kitagawa primarily known for in his acting career?
  
  A. Playing the role of the Blue Ranger in the Super Sentai Series
  B. Playing Godzilla for the 'Millennium' (or 'Shinsei') series
  C. Playing King Ghidorah in the original Mothra film
  D. Playing Godzilla in the 'Showa' series
  Answer: 