mother could be either B or AB and she could also be Negative or Positive.
Mother is a plus child 0 plus what could father be?
No
no
A
No, Welfare will file, plus the father can file an order, as he should. see link
No!
Yes, it is possible for both mother and father to be RH positive and a child to be RH negative.
no
A+
A or B
Yes, this is totally possible.
MOTHER IS o+ father is A- the child will be which group