This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
Cardinal movements of labour in order 
Select and explain. 
A. Engagement--Descent--Flexion--Internal Rotation--Extension--Restitution--External Rotation--Expulsion, B. Engagement--Descent--Flexion--Internal Rotation--Restitution--Extension--External Rotation--Expulsion, C. Engagement--Descent--Flexion--Internal Rotation--Extension--External Rotation--Restitution--Expulsion, D. Engagement--Descent--Flexion--Restitution--Internal Rotation--Extension--External Rotation--Expulsion
A: Engagement--Descent--Flexion--Internal Rotation--Extension--Restitution--External Rotation--Expulsion
Answer: A: Engagement--Descent--Flexion--Internal Rotation--Extension--Restitution--External Rotation--Expulsion 
Explanation: The cardinal movements of labour are engagement, descent, flexion, internal rotation, extension, restitution, external rotation and expulsion Reference: William&;s Obstetrics; 24th edition; Chapter 22; Normal labour