Sickle cell anemia is an inheritable red blood cell disorder that results in sickle-shaped red blood

Sickle cell anemia is an inheritable red blood cell disorder that results in sickle-shaped red blood cells. The sickle-shaped red blood cells can stick to blood vessel walls and cause a blockage or slow the movement of blood throughout the body.

Let HbS be the allele for sickle cell anemia and let HbA be the allele for normal red blood cells.

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Which of the following rows provides the correct genotypes for individuals I-2, I-4, II-1, and III-1?
Select one:
a.
I-2   I-4   II-1   III-1
HbAHbS   HbAHbS   HbAHbS   HbAHbS
b.
I-2   I-4   II-1   III-1
HbA_    HbAHbS   HbAHbS   HbAHbS
c.
I-2   I-4   II-1   III-1
HbAHbA   HbAHbA   HbAHbA   HbAHbA
d.
I-2   I-4   II-1   III-1
HbA_   HbAHbS   HbAHbS   HbA_