This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Caesarean section, Subject name: Gynaecology & Obstetrics
Ideal timing for elective repeat LSCS (ERCS) for a patient of previous 1 LSCS, without any other complicating factor would be? 
Select and explain. 
A. 37 weeks, B. 38 weeks, C. 39 weeks, D. At onset of labour
C: 39 weeks
Answer: C: 39 weeks 
Explanation: Risk of perinatal death with ERCS (Elective Repeat Caesarean section) is extremely low but there is a small increase in perinatal respiratory morbidity, when ERCS is performed before 39 weeks. This morbidity can be reduced with pre op steroids.