The locus that controls ABO blood type in humans resides on chromosome 9. Three alleles, IA, IB, and i determine the blood type A, B, and O, respectively. The inheritance pattern of ABO blood type is illustrated in this table. Blood type

Genotype

A

IAi; IAIA

AO; AA

B

IBi; IBIB

BO; BB

AB

IAIB

AB

O

ii

OO

A father has type A blood, while a mother has type AB blood. Which of the following is true about the blood type of their child?

The probability that their child has type A blood is 50%.
The probability that their child has type B blood is 50%.
The probability that their child has type A blood is 25%.
The probability that their child has type B blood is 6.25%.