What Did Paul Ekman Find in His Classic Studies Conducted

What did Paul Ekman find in his classic studies conducted in the early 1970s?

A) People from collectivist versus individualistic cultures show different emotions.
B) There are six basic human emotions that are expressed by people around the world.
C) The basic emotions that people show depend greatly on both their age and culture.
D) Babies brought up in different cultures differ in their capacity for emotional expressions.