This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Placenta - Types and their complications, Subject name: Gynaecology & Obstetrics
Which of these is the ideal method of removal of placenta after delivery in routine delivery cases? 
Select and explain. 
A. Manual removal of placenta after delivery of baby, B. spontaneous separation of placenta or by controlled cord traction, C. Immediate & firm traction of cord after delivery of baby, D. Crede's method (Fundal pressure squeezing uterus to help placentalseparation anddelivery)
B: spontaneous separation of placenta or by controlled cord traction
Answer: B: spontaneous separation of placenta or by controlled cord traction 
Explanation: Removal of placenta must be done by controlled cord traction (Brandt and Andrews method) or waiting for spontaneous placental separation. Excessive cord traction may inadveently cause uterine inversion. Credes method is obsolete because of high risk of retention of placental bits.