Attribution: Collectivism versus Individualism

The phenomena related to attribution have received much attention from researchers. How does the cultural variable of collectivism versus individualism affect attribution?

a)research indicates that it has a significant mediating effect on attribution
b)research indicates that it has no significant effect on attribution
c)as with many topics, attribution has not been studied cross-culturally, so we do not know the answer yet
d)researchers have studied attribution cross-culturally, but there results are in conflict with each other, so we do not know the answer yet.