This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abnormal labor, Subject name: Anatomy
In a patient with history of previous still bih, optimum time of delivery is : 
Select and explain. 
A. 37 weeks, B. 38 weeks, C. 39 weeks, D. 40 weeks
C: 39 weeks
Answer: C: 39 weeks 
Explanation: All the females who have previous H/o still bih, the optimum time of delivery is 39 weeks and the mode of delivery is vaginal delivery. Ref: Williams Obs 25e pg 649.