Given the Following Red Cell Antigen Frequencies

Multiple Choice

Given the following red cell antigen frequencies:
K 10%
E 30%
K 90%
P₁ 80%
Which of the following red cell alloantibodies would be responsible for incompatible crossmatches with one 1 of 10 random donor units?

A) Anti-K
B) Anti-E
C) Anti-k
D) Anti-P₁