A child has blood type O. Which of the following parental co...

Question

A child has blood type O. Which of the following parental combinations could not produce this child?

A

Type A mother (

) and type B father (

)

B

Type O mother (

) and type O father (

)

C

Type AB mother (

) and type A father (

)

D

Type A mother (

) and type O father (

)