Grafton Eliot Smith and William Perry, Major Figures Associated with the School

Grafton Eliot Smith and William Perry, major figures associated with the school of British diffusionism in the early 20th century, proposed that:

A) Each culture has a key personality type.
B) A culture can only be interpreted in the context of its own historical development.
C) Culture's principal function is establishing institutions to guide behavior.
D) All aspects of civilization are derived from the culture of ancient Egypt.