In the Context of Cross-Cultural Studies on Temperament,which of the Following

In the context of cross-cultural studies on temperament,which of the following is a finding of the study conducted by Freedman (1974) ?

A) The European American babies were more placid than the Chinese American babies.
B) The Chinese American babies were calmer than the European American babies.
C) The African American babies were calmer than the Chinese American babies.
D) The Chinese American babies were less placid than the African American babies.