Which of the Following Is a Problem Limiting the Applicability

Which of the following is a problem limiting the applicability of cross-cultural personality research?

A) Much less research has been conducted on personality in English-speaking countries than in Latin America.
B) Much of the personality research that has been done in other languages have not been made widely available in English-language sources.
C) The majority of the research on personality has been done on children and the aged in Latin America.
D) The majority of the research on personality conducted in the English-speaking countries has not been well-documented until very recently.