The human ABO blood group is controlled by a single autosomal gene with three alleles, IA, IB and i. Individuals with either the IAIA or IAi genotypes have blood type A. Those with IBIB or IBi have blood type B. Those withIAIB have blood type AB, and those with ii have blood type O. What are the possible blood types of offspring of a father with blood type O and a mother with blood type AB?

A) type A only
B) type B only
C) types A and B only
D) types A, B and O only
E) types A, B, AB and O