This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
A baby's blood group was determined as 0 Rh negative. Select the blood group, the baby's mother or father will not have: WB 07 
Select and explain. 
A. A positive, B. B positive, C. AB negative, D. A negative
C: AB negative
Answer: C: AB negative 
Explanation: Ans. AB negative