What blood types can children have if their parent has blood types 1 and 4?

Parents with these blood groups may give birth to children with group II or III, and the chances are 50 to 50. This is due to the fact that representatives of group I do not have antigens A and B, otherwise the first group is also designated as 0 because of the same absence of these two antigens, representatives of the IV blood group, on the contrary, have both. In this regard, children will be with group II (with antigen A) or with group III (with antigen B).