According to the Code of Ethics of the National Association

According to the Code of Ethics of the National Association of Social Workers (2008) , which of the following is an accurate ethical principle?

A) Social workers should provide services and represent themselves as competent even outside the boundaries of their education.
B) Social workers should provide services in substantive areas or use intervention techniques or approaches that are new to them even without supervision.
C) Social workers should base practice on recognized knowledge, including empirically based knowledge, relevant to social work and social work ethics.
D) Social workers should not be involved in areas of practice where generally recognized standards do not exist.