Which of the Following Statements Is True in Terms of the National

Which of the following statements is true in terms of the national health system?

A) A national health system in a country is largely unaffected by social trends.
B) Cultural differences are related to the type of national health system a country is likely to adopt.
C) A country's national health system is solely a product of its economic development.
D) National health systems across cultures do not vary in their beliefs about the cause of diseases.