This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pregnancy in Rh-negative Women, Subject name: Gynaecology & Obstetrics
[{'content': 'Dose of anti D immunoglobin is - \nSelect and explain. \nA. 300 mgm, B. 200mgm, C. 30mgm, D. 3mgm', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 300 mgm o Has been explained in previous sessions", 'role': 'assistant'}]