Which Rationale by a Nursing Instructor Best Explains Why It

Which rationale by a nursing instructor best explains why it is challenging to globally classify the Asian American culture?

A) Extremes of emotional expression prevent accurate assessment of this culture.
B) Suspicion of Western civilization has understandably resulted in minimal participation in cultural research.
C) The small size of this subpopulation makes research virtually impossible.
D) The Asian American culture includes individuals from Japan, China, Vietnam, Korea, and other countries.