LaToya has type A blood, and Gerald has type B blood. Their daughter has type O blood. Can Gerald be the baby daddy? He is a bit worried.

Please complete the Punnett square(s) to determine the possibilities.

a
Yes, if both parents are heterozygous
b
Yes, if one parent is heterozygous
c
No, type B blood must be homozygous
d
No, this is impossible