( A ) first child has the highest risk
( B ) erythroblastosis foetalis could be fatal to the foetus or could cause severe anaemia and jaundice to the baby
( C ) during the delivery of the first child, there is a possibility of exposure of the maternal blood to small amounts of the Rh+ve blood from the foetus and the mother starts preparing antibodies against Rh antigen in her blood
( D ) Rh antigens of the foetus do not get exposed to the Rh-ve blood of the mother in the first pregnancy as the two bloods are well separated by the placenta.
