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: Gynaecology & Obstetrics
All are the contraindications for vaginal bih after previous caesarean except 
Select and explain. 
A. Previous classical uterine incision, B. Previous lower segment transverse caesarean, C. Presence of inveed T shaped uterine incision, D. Where facilities for emergency caesareans are not available
B: Previous lower segment transverse caesarean
Answer: B: Previous lower segment transverse caesarean 
Explanation: Previous classical incision and previous inveed T shaped incision is absolutely contraindicated in vaginal bih after caesarean section. It is again contraindicated if facilities to do an emergency caesarean section is unavailable. But previous lower segment caesarean section can undergo VBAC but should not be forced. (Sheila TB of obstetrics 2nd edtn pg 339,340)