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
Which cardinal movements occur during labour : 
Select and explain. 
A. Flexion, B. Extension, C. Internal rotation, D. all of the above
D: all of the above
Answer: D: all of the above 
Explanation: There are 7 cardinal movements of head in normal labour: 1.Engagement 2.Descent 3.Flexion 4.Internal rotation 5.Extension 6.Restitution 7.External rotation. Refer page no 102 of Text book of obstetitics,sheila balakrishnan,2nd edition.