In a Cross-Cultural Study Comparing Display Rules in Japan, Canada

In a cross-cultural study comparing display rules in Japan, Canada, and the United States, Sadfar et al. (2009) found that

A) Canadians were less emotionally expressive overall than the other groups.
B) women expressed the positive emotion of happiness more than men did in all three cultures.
C) women expressed powerful emotions more than men in all three cultures.
D) people in the United States were less emotionally expressive overall than the other groups.