This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Antepaum Haemorrhage, Subject name: Gynaecology & Obstetrics
'Double set up examination' is concerned with 
Select and explain. 
A. Placenta pre, B. Manual removal of placenta, C. Twin pregnancy, D. Bicornuate uterus
A: Placenta pre
Answer: A: Placenta pre 
Explanation: - 'Double set up of examination' is done when there is suspicion of placenta pre and patient is having bleeding. - It is done under anesthesia, in operation theater, keeping everything ready for cesarean section. - A Digital examination through the cervix is done. Palpation of placenta on lower segment not only conclusively confirms the clinical diagnosis but also identifies its degree. *If the placenta is not felt within approximate 10 cms diameter of the internal os, then the patient can be taken up for a trial of normal vaginal delivery *If the placenta is felt within 10 cms of the cervical rim or if there is bleeding due to the examination, then an immediate cesarean section is performed