Both Within and Across a Sample of 26 Countries, Which

Both within and across a sample of 26 countries, which of the following was found to be true?

A) Southerners tend to be more emotionally expressive than northerners.
B) Blue collar workers tend to be more emotionally expressive than white collar workers.
C) Westerners tend to be more emotionally expressive than Easterners.
D) There are no reliable and consistent differences in the emotional expressiveness of people.