This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
[{'content': 'Commonly used grading for abruption placenta: \nSelect and explain. \nA. Page, B. Johnson, C. Macafee, D. Apt', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Grade 1: unrecognized clinically before delivery Grade 2: intermediate with classical signs of abruption Grade 3: severe abruption with fetus dead (refer pgno:133 sheila textbook of obstetrics 2 nd edition)', 'role': 'assistant'}]