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: Ophthalmology
In hirschberg corneal reflex test, corneal light reflex falls in the centre of in between the border of pupil and limbus, the angle of squint is 
Select and explain. 
A. 15°, B. 30°, C. 45°, D. 60°
B: 30°
Answer: B: 30° 
Explanation: A. border of pupil - 15o.
B. limbus - 45o.
Centre of in B/w A & B (45o - 15o = 30o).