Head Size, Blood Type, the Ability to Cope with Large

Multiple Choice

Head size, blood type, the ability to cope with large amounts of alcohol, and sickle cell anemia have what in common?

A) They are all highly susceptible to epigenetic adaptation.
B) They were all originally distributed in easy-to-see geographic clines.
C) They are all associated with anthropogenic diseases.
D) Each is commonly found near the equator.
E) They are all racially concordant.