In the Mechanism of normal labour, in internal rotation, the occiput rotates through _ _ _ _ _ of a circle, to lie under the pubic arch.

In the Mechanism of normal labour, in internal rotation, the occiput r

1.	In the Mechanism of normal labour, in internal rotation, the occiput rotates through _ _ _ _ _ of a circle, to lie under the pubic arch.
A.
B.
C.	1/6
D.
Answer» E.