During a University of Nevada, Reno Blood Donation Campaign, the Frequencies

Multiple Choice

During a University of Nevada, Reno blood donation campaign, the frequencies of alleles determining the ABO blood groups were 0.70 for i, 0.2 for I^A and 0.1 for I^B. Assuming random mating, what is the expected frequency of blood type B?

A) 0.49
B) 0.18
C) 0.04
D) 0.32
E) 0.15