Edward B Tylor and Lewis Henry Morgan Proposed That Biology Explained

Edward B. Tylor and Lewis Henry Morgan proposed that biology explained why indigenous peoples in Africa, Australia, or the Americas had such modest toolkits to work with in comparison to Europeans and white Americans, suggesting

A) it was a matter of "hardwiring" in our genes.
B) that the bodies and minds of "primitive" people were more highly developed than people from European stock
C) all peoples everywhere are exactly the same biologically.
D) the bodies and minds of "primitive" people were not as developed as people from European stock