Most Social Psychological Research Has Been Conducted in the US

Most social psychological research has been conducted in the US and a few very similar nations.According to the textbook, how well do findings generalise to other cultures?

A) With only one notable exception, no cross-cultural differences have been found in any area of social psychology.
B) In general, there appear to be many large and important cross-cultural differences across areas of social psychology.
C) In general, there appear to be many large and important cross-cultural differences for women, but very few cross-cultural differences for men.
D) Because not enough research has been replicated cross-culturally, it is not well understood what will or will not generalise.