The Distribution of ABO Blood Types Among Korean Americans Differs

The distribution of ABO blood types among Korean Americans differs markedly from that of Native Americans in that

A) Native Americans have about equal frequency of types O, A, and B, with 10% AB, whereas Korean Americans have mostly type O, with type AB very rare.
B) nearly all Korean Americans are blood types A or B.
C) nearly all Native Americans are type AB, with very few type O.
D) Korean Americans have about equal frequency of types O, A, and B, with 10% AB, whereas Native Americans have mostly type O, with type AB very rare.