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: Gynaecology & Obstetrics
Causes of face presentation: 
Select and explain. 
A. Anencephaly, B. Prematurity, C. Contracted pelvis, D. All
D: All
Answer: D: All 
Explanation: Ans. is a, b and c i.e. Anencephaly, Prematurity; and Contracted pelvis