Answer:
The correct answer would be A. types A and B.
In ABO blood group, blood group is determined by three alleles \(I^{A},\)\(I^{B},\) and \(i\).
\(I^{A}\) and \(I^{B}\) are codominant to each other whereas \(i\) is recessive to the other two.
The genotype of one parent is \(I^{A}I^{B}\). So, two types of gametes would be produced \(I^{A}\) and \(I^{B}\)
The genotype of second parent is \(ii\). So, the gamete produced would be \(i\).
The cross would result in the production of offspring with genotype \(I^{A}i\) and \(I^{B}i\).
Thus, the phenotype of the offspring would be blood group A and B.