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
Prolong latent phase is/are seen in:a) Placenta praeviab) Unripe cervixc) Abruptio placentae d) Excessive sedatione) Early epidural analgesia 
Select and explain. 
A. abc, B. ade, C. ace, D. bde
D: bde
Answer: D: bde 
Explanation: None