This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
In heart disease, prophylactic forceps is applied at head station of: 
Select and explain. 
A. -1, B. 1, C. 0, D. 2
D: 2
Answer: D: 2 
Explanation: In heart disease forceps are applied prophylactically to cut down the second stage of labour and usually low or outlet forceps applied.

Low forceps: Applied when leading point of fetal scalp is at station + 2 and not on pelvic floor.
Outlet forceps: Applied when fetal skull has reached pelvic floor and scalp is visible at the introitus even without separating the labia, i.e. station ≥ + 3