The presenting part lies at the level of ischial spine, is called as _ _ _ _ _ station in normal labour.

The presenting part lies at the level of ischial spine, is called as _

1.	The presenting part lies at the level of ischial spine, is called as _ _ _ _ _ station in normal labour.
A.	Zero
B.	-1
C.	-2
D.	+1
Answer» B. -1