This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Obs), Subject name: Gynaecology & Obstetrics
[{'content': 'A 25 years old 2nd gravida with B negative blood group reaches in labor room in full dilatation. All the following norms to be followed except: \nSelect and explain. \nA. Cord blood to be saved in 2 vial - plain & EDTA vial, B. Early clamping of cord, C. Avoidance of manual removal of placenta, D. Liberal prophylactic use of ergometrine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D. Liberal prophylactic use of ergometrineUse of ergot derivatives is contraindicated in Rh negative mother to avoid chances of feto-maternal micro transfusions.', 'role': 'assistant'}]