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Biological marriage of one the following...

Biological marriage of one the following should be avoided
Or
After examining the blood groups of a cuple the doctor advised them not be have more than one child. The blood group of the couple are likely to be
Or
In which of the folliwng situations is there a risk factor for dchildern of incurring erythroblastosis foetalis

A

`Rh^(+)` male and `Rh^(-)` female

B

`Rh^(+)` male and `Rh^(+)` female

C

`Rh^(-)` male and `Rh^(+)` female

D

`Rh^(-)` male and `Rh^(-)` female

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