Which of the following is correct series of labor
1
Engagement, Descent, Flexion, Crowning, Internal rotation of head, Extension, External rotation of head, Restitution.
2
Engagement, Descent, Flexion, Internal rotation of head, Crowning, Extension, Restitution, External rotation of head.
3
Engagement, Descent, Crowning, Flexion, Extension, Restitution, Internal rotation of head, External rotation of head.
4
Engagement, Descent, Flexion, Internal rotation of head, Crowning, Restitution, Extension, External rotation of head.