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
An episiotomy is to be performed in a primigravida in labor. Which of these is an advantage of mediolateral episiotomy over midline episiotomy? 
Select and explain. 
A. Less chance of extension, B. Can be repaired at ease, C. Fewer breakdown, D. Lesser blood loss
A: Less chance of extension
Answer: A: Less chance of extension 
Explanation: Ans: A. Less chance of extension (Ref: Williams 24/e p551).A mediolateral episiotomy is preferred because it has a much lesser chance of extension through the perineum till anal sphincter, though there is increased risk of blood loss and it is difficult to repair.