The correct answer is alternative D) "Decadent and unscrupulous."
It's hard to point out the view of the Japanese on Americans since it's a very personal matter, and the answer may vary a lot, but generally speaking, Japan has always been a very traditional country, with conservative manners and great respect for their traditions.
America, however, has never been that way, which may have caused this view.
Another point of view, was the military's point of view. At the time of the war, there was a booklet called <em>"Read this and the war can be won"</em>, in free translation, that called westerns, America included, cowards, and people not to be respected in that way.
