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
Which among the following is common cause for transverse lie 
Select and explain. 
A. Prolonged labor, B. Nulliparity, C. Placenta previa, D. Oligohydramnios
C: Placenta previa
Answer: C: Placenta previa 
Explanation: Most common causes of transverse lie are:

Multiparity
Preterm fetus
Abnormal uterine anatomy
Hydramnios
Contracted pelvis.