Political Explanations of Japan's Crisis During the 1990s Identified Two

Political explanations of Japan's crisis during the 1990s identified two villains. One of them was the powerful Japanese bureaucracy. Which of the following is the other one?

A) Japan's trade policies with the U.S.
B) Japan's refusal to join Asian trade blocs
C) The powerful influence of the royalty in political issues
D) The long entrenched Liberal Democratic Political Party
E) The splintering of most of Japan's right-wing political parties