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
Commonly used grading for abruption placenta: 
Select and explain. 
A. Page, B. Johnson, C. Macafee, D. Apt
A: Page
Answer: A: Page 
Explanation: 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)